planetarium / comet

Clear skies!

C/1989 T1 (Helin-Roman-Alu)

Basic Information of C/1989 T1 (Helin-Roman-Alu)

Orbital Elements

Parameter Value
Orbit type C
Perihelion distance (AU) 1.027775
Eccentricity 0.989744
Inclination (deg) 46.739300
Longitude of ascending node (deg) 9.405100
Argument of perihelion (deg) 67.263400
Epoch 2023-02-25T00:00:00.000
Reference , MPC orbital elements
Period (years) 1003.182751

Latest Perihelion

Field Value
Date (UTC) 1989-12-06T09:58:19.200
Period (years) 1003.182751

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 14:26:31.28 -52:21:44.1 57.182 2.66 117.8 HIP 70689 13.30
2025-11-22 14:26:37.45 -52:22:13.9 57.183 2.66 118.4 HIP 70689 12.30
2025-11-23 14:26:43.59 -52:22:44.2 57.184 2.66 118.9 HIP 70689 11.31
2025-11-24 14:26:49.68 -52:23:15.1 57.185 2.65 119.5 HIP 70689 10.33
2025-11-25 14:26:55.74 -52:23:46.4 57.185 2.65 120.0 HIP 70689 9.37
2025-11-26 14:27:01.75 -52:24:18.2 57.185 2.64 120.6 HIP 70689 8.43
2025-11-27 14:27:07.72 -52:24:50.5 57.185 2.64 121.2 HIP 70689 7.51
2025-11-28 14:27:13.64 -52:25:23.2 57.185 2.63 121.7 HIP 70689 6.63
2025-11-29 14:27:19.51 -52:25:56.4 57.184 2.62 122.3 HIP 70689 5.81
2025-11-30 14:27:25.33 -52:26:30.1 57.183 2.62 122.9 HIP 70689 5.06
2025-12-01 14:27:31.10 -52:27:04.2 57.182 2.61 123.5 HIP 70689 4.43
2025-12-02 14:27:36.81 -52:27:38.8 57.181 2.60 124.1 HIP 70689 3.98
2025-12-03 14:27:42.47 -52:28:13.7 57.179 2.59 124.7 HIP 70689 3.75
2025-12-04 14:27:48.07 -52:28:49.1 57.177 2.58 125.2 HIP 70689 3.79
2025-12-05 14:27:53.62 -52:29:24.9 57.175 2.57 125.8 HIP 70689 4.09
2025-12-06 14:27:59.11 -52:30:01.0 57.173 2.57 126.4 HIP 70689 4.60
2025-12-07 14:28:04.53 -52:30:37.6 57.171 2.57 126.4 HIP 70689 5.25