Summary of differences in arcseconds

Green means < 10 milli-arcsec, orange < 1 arcsec and red > 1 arcsec

See also list view

astropy
casa novas palpy pyast pyephem skyfield
ecliptic → fk4 12.176896
10.983135
13.951006
3.072234		 — 12.128428
10.935371
13.888976
3.057482		12.188700
10.989591
13.957816
3.072625		11.674292
10.582021
13.791029
2.971487		 — Median
Mean
Max
Std.Dev.
ecliptic → fk5 12.176071
10.982941
13.949959
3.072341		12.183666
10.983796
13.949868
3.071507		12.128188
10.935167
13.887797
3.057587		12.188460
10.989386
13.956636
3.072730		12.176075
10.982942
13.949959
3.072340		 — Median
Mean
Max
Std.Dev.
ecliptic → galactic 11.747090
10.601178
13.470270
2.971002		 — 12.127859
10.935080
13.887731
3.057601		12.188131
10.989299
13.956571
3.072743		12.172479
10.979089
13.945046
3.071261		 — Median
Mean
Max
Std.Dev.
ecliptic → icrs 12.162721
10.969523
13.932065
3.067761		12.169467
10.970410
13.932002
3.066932		12.128188
10.935167
13.887797
3.057587		12.188459
10.989386
13.956636
3.072730		 — — Median
Mean
Max
Std.Dev.
fk4 → ecliptic 12.040722
10.868632
13.951088
3.196444		 — 11.985431
10.820986
13.888844
3.182153		12.044888
10.874632
13.957682
3.197933		2159.911813
1948.949561
2501.029890
573.269310		 — Median
Mean
Max
Std.Dev.
fk4 → fk5 0.004455
0.004223
0.006195
0.001324		 — 0.004455
0.004223
0.006196
0.001324		0.004455
0.004223
0.006196
0.001324		0.564695
0.574742
1.020210
0.254929		 — Median
Mean
Max
Std.Dev.
fk4 → galactic 0.297078
0.270358
0.342891
0.076601		 — 0.217933
0.196145
0.249069
0.055752		0.217933
0.196145
0.249069
0.055752		0.459495
0.458131
0.860151
0.230676		 — Median
Mean
Max
Std.Dev.
fk4 → icrs 0.024104
0.021804
0.029028
0.006514		 — 0.004461
0.004223
0.006199
0.001325		0.004461
0.004223
0.006199
0.001325		 — — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 12.040405
10.868485
13.949966
3.196385		12.042833
10.868937
13.949851
3.196657		11.987949
10.820832
13.887806
3.182083		12.047118
10.874478
13.956645
3.197862		12.040407
10.868485
13.949966
3.196385		 — Median
Mean
Max
Std.Dev.
fk5 → fk4 0.004462
0.004223
0.006212
0.001324		 — 0.004450
0.004217
0.006194
0.001322		0.004450
0.004217
0.006194
0.001322		0.564713
0.574624
1.020036
0.254973		 — Median
Mean
Max
Std.Dev.
fk5 → galactic 0.458094
0.413288
0.524942
0.115604		 — 0.001235
0.001110
0.001414
0.000319		0.001235
0.001110
0.001414
0.000319		0.007900
0.007151
0.009162
0.002086		 — Median
Mean
Max
Std.Dev.
fk5 → icrs 0.025768
0.023355
0.030023
0.006856		0.025767
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
galactic → ecliptic 11.747113
10.625375
13.470301
3.019763		 — 12.088482
10.952434
13.887739
3.111544		12.148645
11.006717
13.956578
3.126967		12.134777
10.998102
13.945060
3.124617		 — Median
Mean
Max
Std.Dev.
galactic → fk4 0.294912
0.268313
0.342896
0.078400		 — 0.217123
0.195032
0.249037
0.056381		0.217123
0.195032
0.249037
0.056381		0.448513
0.449965
0.858774
0.226540		 — Median
Mean
Max
Std.Dev.
galactic → fk5 0.453846
0.412306
0.524934
0.116004		 — 0.001213
0.001098
0.001414
0.000326		0.001213
0.001098
0.001414
0.000326		0.007893
0.007138
0.009162
0.002052		 — Median
Mean
Max
Std.Dev.
galactic → icrs 0.445129
0.406172
0.517378
0.114207		 — 0.001213
0.001098
0.001414
0.000326		0.001213
0.001098
0.001414
0.000326		 — — Median
Mean
Max
Std.Dev.
icrs → ecliptic 12.026334
10.855031
13.932066
3.192086		12.024710
10.855515
13.931998
3.192368		11.987949
10.820832
13.887806
3.182083		12.047119
10.874478
13.956645
3.197862		 — — Median
Mean
Max
Std.Dev.
icrs → fk4 0.024150
0.021805
0.029027
0.006518		 — 0.004450
0.004217
0.006194
0.001322		0.004450
0.004217
0.006194
0.001322		 — — Median
Mean
Max
Std.Dev.
icrs → fk5 0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → galactic 0.449871
0.408095
0.517387
0.113276		 — 0.001235
0.001110
0.001414
0.000319		0.001235
0.001110
0.001414
0.000319		 — — Median
Mean
Max
Std.Dev.

casa
astropy novas palpy pyast pyephem skyfield
ecliptic → fk4 12.176896
10.983135
13.951006
3.072234		 — 0.062985
0.057499
0.074090
0.016668		0.036182
0.032938
0.041569
0.008883		0.559139
0.574901
1.018259
0.251323		 — Median
Mean
Max
Std.Dev.
ecliptic → fk5 12.176071
10.982941
13.949959
3.072341		0.036619
0.032998
0.042000
0.009518		0.062989
0.057502
0.074091
0.016668		0.036183
0.032943
0.041557
0.008885		0.000035
0.000031
0.000040
0.000009		 — Median
Mean
Max
Std.Dev.
ecliptic → galactic 11.747090
10.601178
13.470270
2.971002		 — 0.423789
0.380396
0.479313
0.105126		0.474529
0.428917
0.540607
0.118229		0.452386
0.410633
0.518261
0.113368		 — Median
Mean
Max
Std.Dev.
ecliptic → icrs 12.162721
10.969523
13.932065
3.067761		0.036619
0.032998
0.042000
0.009518		0.041801
0.038337
0.049150
0.010923		0.029219
0.026383
0.033100
0.007166		 — — Median
Mean
Max
Std.Dev.
fk4 → ecliptic 12.040722
10.868632
13.951088
3.196444		 — 0.063353
0.057303
0.074093
0.017007		0.036432
0.033074
0.041561
0.008952		2171.891432
1959.817222
2514.975798
576.465454		 — Median
Mean
Max
Std.Dev.
fk4 → fk5 0.004455
0.004223
0.006195
0.001324		 — 0.000006
0.000005
0.000007
0.000002		0.000006
0.000005
0.000007
0.000002		0.565963
0.575007
1.019602
0.254423		 — Median
Mean
Max
Std.Dev.
fk4 → galactic 0.297078
0.270358
0.342891
0.076601		 — 0.305000
0.309451
0.586296
0.156885		0.305000
0.309451
0.586296
0.156885		0.452848
0.408335
0.518503
0.114099		 — Median
Mean
Max
Std.Dev.
fk4 → icrs 0.024104
0.021804
0.029028
0.006514		 — 0.025795
0.023360
0.030027
0.006850		0.025795
0.023360
0.030027
0.006850		 — — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 12.040405
10.868485
13.949966
3.196385		0.036620
0.032998
0.042000
0.009518		0.063328
0.057304
0.074092
0.017004		0.036442
0.033079
0.041557
0.008934		0.000035
0.000031
0.000040
0.000009		 — Median
Mean
Max
Std.Dev.
fk5 → fk4 0.004462
0.004223
0.006212
0.001324		 — 0.000014
0.000014
0.000156
0.000009		0.000014
0.000014
0.000156
0.000009		0.564780
0.574895
1.019429
0.254469		 — Median
Mean
Max
Std.Dev.
fk5 → galactic 0.458094
0.413288
0.524942
0.115604		 — 0.457973
0.413190
0.524860
0.115613		0.457973
0.413190
0.524860
0.115613		0.452300
0.408086
0.518261
0.114089		 — Median
Mean
Max
Std.Dev.
fk5 → icrs 0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000001
0.000000		0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		 — — Median
Mean
Max
Std.Dev.
galactic → ecliptic 11.747113
10.625375
13.470301
3.019763		 — 0.412931
0.376211
0.479308
0.105471		0.465077
0.424541
0.540597
0.118943		0.446826
0.407091
0.518249
0.114453		 — Median
Mean
Max
Std.Dev.
galactic → fk4 0.294912
0.268313
0.342896
0.078400		 — 0.289300
0.305089
0.586087
0.153734		0.289300
0.305089
0.586087
0.153734		0.447031
0.407285
0.518496
0.114508		 — Median
Mean
Max
Std.Dev.
galactic → fk5 0.453846
0.412306
0.524934
0.116004		 — 0.453866
0.412239
0.524856
0.116004		0.453866
0.412239
0.524856
0.116004		0.446820
0.407091
0.518249
0.114454		 — Median
Mean
Max
Std.Dev.
galactic → icrs 0.445129
0.406172
0.517378
0.114207		 — 0.445291
0.406074
0.517262
0.114202		0.445291
0.406074
0.517262
0.114202		 — — Median
Mean
Max
Std.Dev.
icrs → ecliptic 12.026334
10.855031
13.932066
3.192086		0.036619
0.032998
0.042000
0.009518		0.041853
0.038088
0.049150
0.011165		0.029060
0.026194
0.033101
0.007358		 — — Median
Mean
Max
Std.Dev.
icrs → fk4 0.024150
0.021805
0.029027
0.006518		 — 0.025765
0.023354
0.030035
0.006857		0.025765
0.023354
0.030035
0.006857		 — — Median
Mean
Max
Std.Dev.
icrs → fk5 0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000001
0.000000		0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		 — — Median
Mean
Max
Std.Dev.
icrs → galactic 0.449871
0.408095
0.517387
0.113276		 — 0.450293
0.407967
0.517266
0.113281		0.450293
0.407967
0.517266
0.113281		 — — Median
Mean
Max
Std.Dev.

novas
astropy casa palpy pyast pyephem skyfield
ecliptic → fk5 12.183666
10.983796
13.949868
3.071507		0.036619
0.032998
0.042000
0.009518		0.056831
0.051613
0.065971
0.015038		0.020006
0.018190
0.023147
0.005122		0.036584
0.032967
0.041960
0.009509		 — Median
Mean
Max
Std.Dev.
ecliptic → icrs 12.169467
10.970410
13.932002
3.066932		0.036619
0.032998
0.042000
0.009518		0.042302
0.038737
0.048756
0.010579		0.027330
0.024660
0.031674
0.007067		 — — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 12.042833
10.868937
13.949851
3.196657		0.036620
0.032998
0.042000
0.009518		0.056558
0.051305
0.065971
0.015098		0.020125
0.018223
0.023147
0.005180		0.036585
0.032967
0.041960
0.009509		 — Median
Mean
Max
Std.Dev.
fk5 → icrs 0.025767
0.023355
0.030023
0.006856		0.000000
0.000000
0.000001
0.000000		0.025767
0.023355
0.030023
0.006856		0.025767
0.023355
0.030023
0.006856		 — — Median
Mean
Max
Std.Dev.
icrs → ecliptic 12.024710
10.855515
13.931998
3.192368		0.036619
0.032998
0.042000
0.009518		0.041973
0.038386
0.048756
0.010878		0.026856
0.024571
0.031674
0.007105		 — — Median
Mean
Max
Std.Dev.
icrs → fk5 0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000001
0.000000		0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		 — — Median
Mean
Max
Std.Dev.

palpy
astropy casa novas pyast pyephem skyfield
ecliptic → fk4 12.128428
10.935371
13.888976
3.057482		0.062985
0.057499
0.074090
0.016668		 — 0.060105
0.054222
0.068844
0.015143		0.543957
0.554878
0.988669
0.244565		 — Median
Mean
Max
Std.Dev.
ecliptic → fk5 12.128188
10.935167
13.887797
3.057587		0.062989
0.057502
0.074091
0.016668		0.056831
0.051613
0.065971
0.015038		0.060105
0.054222
0.068844
0.015143		0.062990
0.057487
0.074073
0.016664		 — Median
Mean
Max
Std.Dev.
ecliptic → galactic 12.127859
10.935080
13.887731
3.057601		0.423789
0.380396
0.479313
0.105126		 — 0.060105
0.054222
0.068844
0.015143		0.058886
0.053390
0.068898
0.015687		 — Median
Mean
Max
Std.Dev.
ecliptic → icrs 12.128188
10.935167
13.887797
3.057587		0.041801
0.038337
0.049150
0.010923		0.042302
0.038737
0.048756
0.010579		0.060105
0.054222
0.068844
0.015143		 — — Median
Mean
Max
Std.Dev.
fk4 → ecliptic 11.985431
10.820986
13.888844
3.182153		0.063353
0.057303
0.074093
0.017007		 — 0.059451
0.053648
0.068844
0.015781		2171.836776
1959.769896
2514.914473
576.451267		 — Median
Mean
Max
Std.Dev.
fk4 → fk5 0.004455
0.004223
0.006196
0.001324		0.000006
0.000005
0.000007
0.000002		 — 0.000000
0.000000
0.000000
0.000000		0.565967
0.575010
1.019607
0.254424		 — Median
Mean
Max
Std.Dev.
fk4 → galactic 0.217933
0.196145
0.249069
0.055752		0.305000
0.309451
0.586296
0.156885		 — 0.000000
0.000000
0.000000
0.000000		0.563261
0.569953
1.012050
0.253002		 — Median
Mean
Max
Std.Dev.
fk4 → icrs 0.004461
0.004223
0.006199
0.001325		0.025795
0.023360
0.030027
0.006850		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 11.987949
10.820832
13.887806
3.182083		0.063328
0.057304
0.074092
0.017004		0.056558
0.051305
0.065971
0.015098		0.059451
0.053648
0.068844
0.015780		0.063304
0.057289
0.074073
0.017000		 — Median
Mean
Max
Std.Dev.
fk5 → fk4 0.004450
0.004217
0.006194
0.001322		0.000014
0.000014
0.000156
0.000009		 — 0.000000
0.000000
0.000000
0.000000		0.564797
0.574896
1.019420
0.254471		 — Median
Mean
Max
Std.Dev.
fk5 → galactic 0.001235
0.001110
0.001414
0.000319		0.457973
0.413190
0.524860
0.115613		 — 0.000000
0.000000
0.000000
0.000000		0.008617
0.007782
0.009988
0.002287		 — Median
Mean
Max
Std.Dev.
fk5 → icrs 0.000000
0.000000
0.000000
0.000000		0.025768
0.023355
0.030023
0.006856		0.025767
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
galactic → ecliptic 12.088482
10.952434
13.887739
3.111544		0.412931
0.376211
0.479308
0.105471		 — 0.060143
0.054286
0.068844
0.015425		0.060528
0.054900
0.068899
0.015147		 — Median
Mean
Max
Std.Dev.
galactic → fk4 0.217123
0.195032
0.249037
0.056381		0.289300
0.305089
0.586087
0.153734		 — 0.000000
0.000000
0.000000
0.000000		0.543986
0.560180
1.009565
0.241864		 — Median
Mean
Max
Std.Dev.
galactic → fk5 0.001213
0.001098
0.001414
0.000326		0.453866
0.412239
0.524856
0.116004		 — 0.000000
0.000000
0.000000
0.000000		0.008570
0.007780
0.009988
0.002224		 — Median
Mean
Max
Std.Dev.
galactic → icrs 0.001213
0.001098
0.001414
0.000326		0.445291
0.406074
0.517262
0.114202		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → ecliptic 11.987949
10.820832
13.887806
3.182083		0.041853
0.038088
0.049150
0.011165		0.041973
0.038386
0.048756
0.010878		0.059451
0.053648
0.068844
0.015780		 — — Median
Mean
Max
Std.Dev.
icrs → fk4 0.004450
0.004217
0.006194
0.001322		0.025765
0.023354
0.030035
0.006857		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → fk5 0.000000
0.000000
0.000000
0.000000		0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → galactic 0.001235
0.001110
0.001414
0.000319		0.450293
0.407967
0.517266
0.113281		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.

pyast
astropy casa novas palpy pyephem skyfield
ecliptic → fk4 12.188700
10.989591
13.957816
3.072625		0.036182
0.032938
0.041569
0.008883		 — 0.060105
0.054222
0.068844
0.015143		0.577853
0.591075
1.036336
0.252163		 — Median
Mean
Max
Std.Dev.
ecliptic → fk5 12.188460
10.989386
13.956636
3.072730		0.036183
0.032943
0.041557
0.008885		0.020006
0.018190
0.023147
0.005122		0.060105
0.054222
0.068844
0.015143		0.036153
0.032916
0.041523
0.008877		 — Median
Mean
Max
Std.Dev.
ecliptic → galactic 12.188131
10.989299
13.956571
3.072743		0.474529
0.428917
0.540607
0.118229		 — 0.060105
0.054222
0.068844
0.015143		0.035177
0.032202
0.040494
0.008559		 — Median
Mean
Max
Std.Dev.
ecliptic → icrs 12.188459
10.989386
13.956636
3.072730		0.029219
0.026383
0.033100
0.007166		0.027330
0.024660
0.031674
0.007067		0.060105
0.054222
0.068844
0.015143		 — — Median
Mean
Max
Std.Dev.
fk4 → ecliptic 12.044888
10.874632
13.957682
3.197933		0.036432
0.033074
0.041561
0.008952		 — 0.059451
0.053648
0.068844
0.015781		2171.896226
1959.823544
2514.983311
576.467048		 — Median
Mean
Max
Std.Dev.
fk4 → fk5 0.004455
0.004223
0.006196
0.001324		0.000006
0.000005
0.000007
0.000002		 — 0.000000
0.000000
0.000000
0.000000		0.565967
0.575010
1.019607
0.254424		 — Median
Mean
Max
Std.Dev.
fk4 → galactic 0.217933
0.196145
0.249069
0.055752		0.305000
0.309451
0.586296
0.156885		 — 0.000000
0.000000
0.000000
0.000000		0.563261
0.569953
1.012050
0.253002		 — Median
Mean
Max
Std.Dev.
fk4 → icrs 0.004461
0.004223
0.006199
0.001325		0.025795
0.023360
0.030027
0.006850		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 12.047118
10.874478
13.956645
3.197862		0.036442
0.033079
0.041557
0.008934		0.020125
0.018223
0.023147
0.005180		0.059451
0.053648
0.068844
0.015780		0.036411
0.033053
0.041523
0.008926		 — Median
Mean
Max
Std.Dev.
fk5 → fk4 0.004450
0.004217
0.006194
0.001322		0.000014
0.000014
0.000156
0.000009		 — 0.000000
0.000000
0.000000
0.000000		0.564797
0.574896
1.019420
0.254471		 — Median
Mean
Max
Std.Dev.
fk5 → galactic 0.001235
0.001110
0.001414
0.000319		0.457973
0.413190
0.524860
0.115613		 — 0.000000
0.000000
0.000000
0.000000		0.008617
0.007782
0.009988
0.002287		 — Median
Mean
Max
Std.Dev.
fk5 → icrs 0.000000
0.000000
0.000000
0.000000		0.025768
0.023355
0.030023
0.006856		0.025767
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
galactic → ecliptic 12.148645
11.006717
13.956578
3.126967		0.465077
0.424541
0.540597
0.118943		 — 0.060143
0.054286
0.068844
0.015425		0.035078
0.031852
0.040494
0.009102		 — Median
Mean
Max
Std.Dev.
galactic → fk4 0.217123
0.195032
0.249037
0.056381		0.289300
0.305089
0.586087
0.153734		 — 0.000000
0.000000
0.000000
0.000000		0.543986
0.560180
1.009565
0.241864		 — Median
Mean
Max
Std.Dev.
galactic → fk5 0.001213
0.001098
0.001414
0.000326		0.453866
0.412239
0.524856
0.116004		 — 0.000000
0.000000
0.000000
0.000000		0.008570
0.007780
0.009988
0.002224		 — Median
Mean
Max
Std.Dev.
galactic → icrs 0.001213
0.001098
0.001414
0.000326		0.445291
0.406074
0.517262
0.114202		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → ecliptic 12.047119
10.874478
13.956645
3.197862		0.029060
0.026194
0.033101
0.007358		0.026856
0.024571
0.031674
0.007105		0.059451
0.053648
0.068844
0.015780		 — — Median
Mean
Max
Std.Dev.
icrs → fk4 0.004450
0.004217
0.006194
0.001322		0.025765
0.023354
0.030035
0.006857		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → fk5 0.000000
0.000000
0.000000
0.000000		0.025768
0.023355
0.030023
0.006856		0.025768
0.023355
0.030023
0.006856		0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.
icrs → galactic 0.001235
0.001110
0.001414
0.000319		0.450293
0.407967
0.517266
0.113281		 — 0.000000
0.000000
0.000000
0.000000		 — — Median
Mean
Max
Std.Dev.

pyephem
astropy casa novas palpy pyast skyfield
ecliptic → fk4 11.674292
10.582021
13.791029
2.971487		0.559139
0.574901
1.018259
0.251323		 — 0.543957
0.554878
0.988669
0.244565		0.577853
0.591075
1.036336
0.252163		 — Median
Mean
Max
Std.Dev.
ecliptic → fk5 12.176075
10.982942
13.949959
3.072340		0.000035
0.000031
0.000040
0.000009		0.036584
0.032967
0.041960
0.009509		0.062990
0.057487
0.074073
0.016664		0.036153
0.032916
0.041523
0.008877		 — Median
Mean
Max
Std.Dev.
ecliptic → galactic 12.172479
10.979089
13.945046
3.071261		0.452386
0.410633
0.518261
0.113368		 — 0.058886
0.053390
0.068898
0.015687		0.035177
0.032202
0.040494
0.008559		 — Median
Mean
Max
Std.Dev.
fk4 → ecliptic 2159.911813
1948.949561
2501.029890
573.269310		2171.891432
1959.817222
2514.975798
576.465454		 — 2171.836776
1959.769896
2514.914473
576.451267		2171.896226
1959.823544
2514.983311
576.467048		 — Median
Mean
Max
Std.Dev.
fk4 → fk5 0.564695
0.574742
1.020210
0.254929		0.565963
0.575007
1.019602
0.254423		 — 0.565967
0.575010
1.019607
0.254424		0.565967
0.575010
1.019607
0.254424		 — Median
Mean
Max
Std.Dev.
fk4 → galactic 0.459495
0.458131
0.860151
0.230676		0.452848
0.408335
0.518503
0.114099		 — 0.563261
0.569953
1.012050
0.253002		0.563261
0.569953
1.012050
0.253002		 — Median
Mean
Max
Std.Dev.
fk5 → ecliptic 12.040407
10.868485
13.949966
3.196385		0.000035
0.000031
0.000040
0.000009		0.036585
0.032967
0.041960
0.009509		0.063304
0.057289
0.074073
0.017000		0.036411
0.033053
0.041523
0.008926		 — Median
Mean
Max
Std.Dev.
fk5 → fk4 0.564713
0.574624
1.020036
0.254973		0.564780
0.574895
1.019429
0.254469		 — 0.564797
0.574896
1.019420
0.254471		0.564797
0.574896
1.019420
0.254471		 — Median
Mean
Max
Std.Dev.
fk5 → galactic 0.007900
0.007151
0.009162
0.002086		0.452300
0.408086
0.518261
0.114089		 — 0.008617
0.007782
0.009988
0.002287		0.008617
0.007782
0.009988
0.002287		 — Median
Mean
Max
Std.Dev.
galactic → ecliptic 12.134777
10.998102
13.945060
3.124617		0.446826
0.407091
0.518249
0.114453		 — 0.060528
0.054900
0.068899
0.015147		0.035078
0.031852
0.040494
0.009102		 — Median
Mean
Max
Std.Dev.
galactic → fk4 0.448513
0.449965
0.858774
0.226540		0.447031
0.407285
0.518496
0.114508		 — 0.543986
0.560180
1.009565
0.241864		0.543986
0.560180
1.009565
0.241864		 — Median
Mean
Max
Std.Dev.
galactic → fk5 0.007893
0.007138
0.009162
0.002052		0.446820
0.407091
0.518249
0.114454		 — 0.008570
0.007780
0.009988
0.002224		0.008570
0.007780
0.009988
0.002224		 — Median
Mean
Max
Std.Dev.

skyfield
astropy casa novas palpy pyast pyephem