planetarium / comet

Clear skies!

C/2021 A9 (PANSTARRS)

Basic Information of C/2021 A9 (PANSTARRS)

Orbital Elements

Parameter Value
Orbit type C
Perihelion distance (AU) 7.765257
Eccentricity 0.999820
Inclination (deg) 158.017800
Longitude of ascending node (deg) 314.851700
Argument of perihelion (deg) 211.662600
Epoch 2025-11-21T00:00:00.000
Reference MPEC 2025-V36, MPC orbital elements
Period (years) 8960350.392906

Latest Perihelion

Field Value
Date (UTC) 2023-12-04T07:26:58.560
Period (years) 8960350.392906

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 04:21:09.30 -02:27:59.6 7.996 26.86 256.9 HIP 20243 16.63
2025-11-22 04:20:27.39 -02:30:25.3 7.998 26.86 257.2 HIP 20243 7.89
2025-11-23 04:19:45.43 -02:32:47.8 8.000 26.85 257.5 HIP 20243 8.93
2025-11-24 04:19:03.45 -02:35:07.0 8.003 26.83 257.8 HIP 20078 15.71
2025-11-25 04:18:21.45 -02:37:23.0 8.006 26.80 258.1 HIP 20078 13.29
2025-11-26 04:17:39.45 -02:39:35.7 8.009 26.76 258.4 HIP 20078 18.30
2025-11-27 04:16:57.47 -02:41:45.0 8.013 26.71 258.7 HIP 19937 19.94
2025-11-28 04:16:15.51 -02:43:51.0 8.017 26.66 259.0 HIP 19937 21.83
2025-11-29 04:15:33.60 -02:45:53.6 8.022 26.60 259.2 HIP 19937 27.94
2025-11-30 04:14:51.74 -02:47:52.7 8.027 26.53 259.5 HIP 19937 36.18
2025-12-01 04:14:09.96 -02:49:48.4 8.032 26.45 259.8 HIP 19644 30.81
2025-12-02 04:13:28.26 -02:51:40.6 8.038 26.36 260.1 HIP 19644 25.06
2025-12-03 04:12:46.65 -02:53:29.2 8.043 26.27 260.4 HIP 19555 21.90
2025-12-04 04:12:05.16 -02:55:14.4 8.050 26.16 260.7 HIP 19555 11.41
2025-12-05 04:11:23.80 -02:56:56.0 8.056 26.05 261.0 HIP 19555 1.22
2025-12-06 04:10:42.57 -02:58:34.0 8.063 25.94 261.3 HIP 19555 9.55
2025-12-07 04:10:01.50 -03:00:08.5 8.071 25.94 261.3 HIP 19555 19.91