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C/2021 A4 (NEOWISE)

Basic Information of C/2021 A4 (NEOWISE)

Orbital Elements

Parameter Value
Orbit type C
Perihelion distance (AU) 1.146144
Eccentricity 0.973319
Inclination (deg) 111.561400
Longitude of ascending node (deg) 307.094000
Argument of perihelion (deg) 204.691400
Epoch 2022-01-21T00:00:00.000
Reference , MPC orbital elements
Period (years) 281.550060

Latest Perihelion

Field Value
Date (UTC) 2021-03-20T00:29:48.480
Period (years) 281.550060

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 20:36:52.18 -23:57:20.3 14.414 4.49 50.7 HIP 101823 23.32
2025-11-22 20:36:58.27 -23:56:12.0 14.435 4.63 51.7 HIP 101823 23.20
2025-11-23 20:37:04.63 -23:55:03.2 14.457 4.76 52.5 HIP 101823 23.19
2025-11-24 20:37:11.24 -23:53:53.6 14.478 4.89 53.3 HIP 101823 23.31
2025-11-25 20:37:18.10 -23:52:43.5 14.499 5.03 54.1 HIP 101823 23.56
2025-11-26 20:37:25.22 -23:51:32.7 14.520 5.16 54.8 HIP 101823 23.96
2025-11-27 20:37:32.59 -23:50:21.3 14.541 5.29 55.4 HIP 101823 24.51
2025-11-28 20:37:40.21 -23:49:09.3 14.561 5.41 56.1 HIP 101823 25.21
2025-11-29 20:37:48.06 -23:47:56.8 14.582 5.54 56.7 HIP 101823 26.07
2025-11-30 20:37:56.16 -23:46:43.7 14.602 5.67 57.2 HIP 101823 27.08
2025-12-01 20:38:04.48 -23:45:30.0 14.623 5.79 57.7 HIP 101823 28.23
2025-12-02 20:38:13.04 -23:44:15.9 14.643 5.91 58.2 HIP 101997 27.18
2025-12-03 20:38:21.82 -23:43:01.2 14.663 6.03 58.7 HIP 101997 25.32
2025-12-04 20:38:30.83 -23:41:45.9 14.682 6.15 59.2 HIP 101997 23.51
2025-12-05 20:38:40.06 -23:40:30.2 14.702 6.27 59.6 HIP 101997 21.76
2025-12-06 20:38:49.50 -23:39:14.1 14.721 6.38 60.0 HIP 101997 20.11
2025-12-07 20:38:59.15 -23:37:57.4 14.740 6.38 60.0 HIP 101997 18.62