planetarium / comet

Clear skies!

C/2009 Y4 (STEREO)

Basic Information of C/2009 Y4 (STEREO)

Orbital Elements

Parameter Value
Orbit type C
Perihelion distance (AU) 0.004856
Eccentricity 1.000000
Inclination (deg) 144.573400
Longitude of ascending node (deg) 4.566800
Argument of perihelion (deg) 83.191200
Epoch 2010-01-03T12:53:08.160
Reference , MPC orbital elements

Latest Perihelion

Field Value
Date (UTC) 2010-01-03T12:53:08.160

Magnitude

Magnitude Chart Placeholder

Ephemeris

Date (UTC) RA (J2000) Dec (J2000) Δ (AU) Motion (arcsec/hr) Dir (deg) Nearest HIP Dist (arcmin)
2025-11-21 06:53:05.53 -12:56:56.2 34.931 3.49 245.5 HIP 33113 17.92
2025-11-22 06:53:00.31 -12:57:30.9 34.925 3.53 246.4 HIP 33113 18.24
2025-11-23 06:52:55.01 -12:58:04.8 34.919 3.56 247.3 HIP 33113 18.69
2025-11-24 06:52:49.62 -12:58:37.8 34.914 3.59 248.1 HIP 33113 19.25
2025-11-25 06:52:44.15 -12:59:09.9 34.908 3.62 249.0 HIP 33113 19.93
2025-11-26 06:52:38.60 -12:59:41.1 34.902 3.65 249.8 HIP 33113 20.71
2025-11-27 06:52:32.97 -13:00:11.4 34.897 3.68 250.6 HIP 33113 21.58
2025-11-28 06:52:27.27 -13:00:40.7 34.892 3.71 251.4 HIP 32932 21.33
2025-11-29 06:52:21.49 -13:01:09.2 34.887 3.74 252.2 HIP 32932 21.01
2025-11-30 06:52:15.64 -13:01:36.7 34.883 3.77 252.9 HIP 32932 20.77
2025-12-01 06:52:09.72 -13:02:03.3 34.878 3.80 253.7 HIP 32876 20.23
2025-12-02 06:52:03.73 -13:02:28.9 34.874 3.83 254.4 HIP 32876 18.81
2025-12-03 06:51:57.68 -13:02:53.5 34.870 3.85 255.2 HIP 32876 17.40
2025-12-04 06:51:51.56 -13:03:17.2 34.866 3.88 255.9 HIP 32876 16.01
2025-12-05 06:51:45.37 -13:03:39.9 34.863 3.91 256.6 HIP 32876 14.65
2025-12-06 06:51:39.13 -13:04:01.6 34.859 3.93 257.3 HIP 32876 13.33
2025-12-07 06:51:32.83 -13:04:22.3 34.856 3.93 257.3 HIP 32876 12.08