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kvsankar/20200621-eclipse-pa-bangalore.py

Last active June 22, 2020 15:20
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20200621-eclipse-pa-bangalore.py
#!/usr/bin/python
# Python code to calculate Position Angle of the Moon
# in the 2020 June 21 solar eclipse observed from Bangalore, India
from astropy.time import Time, TimeDelta
from astropy.coordinates import solar_system_ephemeris, EarthLocation
from astropy.coordinates import get_body_barycentric, get_body, get_moon
from astropy.coordinates import Longitude, Latitude
from astropy.units import Quantity
start = Time("2020-06-21 04:42") # 10:12 IST
end = Time("2020-06-21 08:02") # 13:32 IST
td = TimeDelta(60.0, format='sec')
# loc = EarthLocation.of_site('bangalore')
lon = Longitude('77 deg 35 min')
lat = Latitude('12 deg 59 min')
loc = EarthLocation.from_geodetic(lon, lat)
t = start
while t <= end:
with solar_system_ephemeris.set('builtin'):
sun = get_body('sun', t, loc)
moon = get_body('moon', t, loc)
pa = sun.position_angle(moon).degree
print t, " UTC ", pa
t = t + td
# end of file
Raw
20200621-eclipse-pa-bangalore.txt
2020-06-21 04:42:00.000 UTC 284.473589371
2020-06-21 04:43:00.000 UTC 284.787775169
2020-06-21 04:44:00.000 UTC 285.106340372
2020-06-21 04:45:00.000 UTC 285.429362609
2020-06-21 04:46:00.000 UTC 285.756920884
2020-06-21 04:47:00.000 UTC 286.08909564
2020-06-21 04:48:00.000 UTC 286.425968754
2020-06-21 04:49:00.000 UTC 286.767623537
2020-06-21 04:50:00.000 UTC 287.114144752
2020-06-21 04:51:00.000 UTC 287.465618606
2020-06-21 04:52:00.000 UTC 287.822132744
2020-06-21 04:53:00.000 UTC 288.183776257
2020-06-21 04:54:00.000 UTC 288.550639665
2020-06-21 04:55:00.000 UTC 288.922814901
2020-06-21 04:56:00.000 UTC 289.300395313
2020-06-21 04:57:00.000 UTC 289.683475628
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2020-06-21 05:01:00.000 UTC 291.272737787
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2020-06-21 05:12:00.000 UTC 296.157933081
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2020-06-21 05:14:00.000 UTC 297.135103741
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2020-06-21 05:43:00.000 UTC 315.021046145
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2020-06-21 05:45:00.000 UTC 316.534935195
2020-06-21 05:46:00.000 UTC 317.305717015
2020-06-21 05:47:00.000 UTC 318.085639514
2020-06-21 05:48:00.000 UTC 318.874623023
2020-06-21 05:49:00.000 UTC 319.672574111
2020-06-21 05:50:00.000 UTC 320.47938517
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2020-06-21 05:53:00.000 UTC 322.951680564
2020-06-21 05:54:00.000 UTC 323.7925579
2020-06-21 05:55:00.000 UTC 324.641531459
2020-06-21 05:56:00.000 UTC 325.498401723
2020-06-21 05:57:00.000 UTC 326.362952596
2020-06-21 05:58:00.000 UTC 327.23495249
2020-06-21 05:59:00.000 UTC 328.114153671
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2020-06-21 06:01:00.000 UTC 329.893089624
2020-06-21 06:02:00.000 UTC 330.792250355
2020-06-21 06:03:00.000 UTC 331.69746489
2020-06-21 06:04:00.000 UTC 332.608408798
2020-06-21 06:05:00.000 UTC 333.524743576
2020-06-21 06:06:00.000 UTC 334.446117157
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2020-06-21 06:09:00.000 UTC 337.236761745
2020-06-21 06:10:00.000 UTC 338.17452419
2020-06-21 06:11:00.000 UTC 339.115387842
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2020-06-21 06:13:00.000 UTC 341.004742866
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2020-06-21 06:15:00.000 UTC 342.901403962
2020-06-21 06:16:00.000 UTC 343.851378533
2020-06-21 06:17:00.000 UTC 344.801855712
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2020-06-21 06:19:00.000 UTC 346.70251807
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2020-06-21 06:22:00.000 UTC 349.545973996
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2020-06-21 06:24:00.000 UTC 351.431247429
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2020-06-21 06:44:00.000 UTC 9.01015885995
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2020-06-21 06:52:00.000 UTC 15.1788449343
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2020-06-21 07:04:00.000 UTC 23.4510023686
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2020-06-21 07:37:00.000 UTC 40.4015370949
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2020-06-21 07:39:00.000 UTC 41.2077084782
2020-06-21 07:40:00.000 UTC 41.60313823
2020-06-21 07:41:00.000 UTC 41.9935858851
2020-06-21 07:42:00.000 UTC 42.3791410207
2020-06-21 07:43:00.000 UTC 42.7598917608
2020-06-21 07:44:00.000 UTC 43.1359247652
2020-06-21 07:45:00.000 UTC 43.5073252249
2020-06-21 07:46:00.000 UTC 43.8741768503
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2020-06-21 07:48:00.000 UTC 44.5945611087
2020-06-21 07:49:00.000 UTC 44.9482538274
2020-06-21 07:50:00.000 UTC 45.2977178969
2020-06-21 07:51:00.000 UTC 45.6430297233
2020-06-21 07:52:00.000 UTC 45.984264278
2020-06-21 07:53:00.000 UTC 46.3214951075
2020-06-21 07:54:00.000 UTC 46.6547943473
2020-06-21 07:55:00.000 UTC 46.9842327413
2020-06-21 07:56:00.000 UTC 47.309879629
2020-06-21 07:57:00.000 UTC 47.6318030199
2020-06-21 07:58:00.000 UTC 47.9500695509
2020-06-21 07:59:00.000 UTC 48.2647445334
2020-06-21 08:00:00.000 UTC 48.5758919749
2020-06-21 08:01:00.000 UTC 48.8835746648
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