C/1989 R1 (Helin-Roman)
Basic Information of C/1989 R1 (Helin-Roman)
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | C |
| Perihelion distance (AU) | 1.324502 |
| Eccentricity | 1.000000 |
| Inclination (deg) | 128.134100 |
| Longitude of ascending node (deg) | 128.609600 |
| Argument of perihelion (deg) | 154.910300 |
| Epoch | 1989-08-20T06:59:02.400 |
| Reference | , MPC orbital elements |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 1989-08-20T06:59:02.400 |
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 | 09:53:07.81 | -21:10:35.4 | 60.428 | 1.29 | 188.2 | HIP 48480 | 22.61 |
| 2025-11-22 | 09:53:07.50 | -21:11:06.0 | 60.416 | 1.28 | 190.1 | HIP 48480 | 23.12 |
| 2025-11-23 | 09:53:07.11 | -21:11:36.3 | 60.405 | 1.28 | 192.0 | HIP 48480 | 23.63 |
| 2025-11-24 | 09:53:06.66 | -21:12:06.3 | 60.393 | 1.27 | 193.9 | HIP 48480 | 24.14 |
| 2025-11-25 | 09:53:06.13 | -21:12:35.9 | 60.381 | 1.27 | 195.9 | HIP 48480 | 24.64 |
| 2025-11-26 | 09:53:05.54 | -21:13:05.2 | 60.370 | 1.27 | 197.8 | HIP 48480 | 25.14 |
| 2025-11-27 | 09:53:04.87 | -21:13:34.2 | 60.358 | 1.26 | 199.8 | HIP 48480 | 25.63 |
| 2025-11-28 | 09:53:04.14 | -21:14:02.7 | 60.346 | 1.26 | 201.7 | HIP 48480 | 26.12 |
| 2025-11-29 | 09:53:03.33 | -21:14:30.9 | 60.335 | 1.27 | 203.7 | HIP 48480 | 26.61 |
| 2025-11-30 | 09:53:02.46 | -21:14:58.7 | 60.323 | 1.27 | 205.6 | HIP 48480 | 27.09 |
| 2025-12-01 | 09:53:01.52 | -21:15:26.1 | 60.311 | 1.27 | 207.6 | HIP 48480 | 27.57 |
| 2025-12-02 | 09:53:00.51 | -21:15:53.1 | 60.300 | 1.27 | 209.5 | HIP 48480 | 28.05 |
| 2025-12-03 | 09:52:59.43 | -21:16:19.7 | 60.288 | 1.28 | 211.5 | HIP 48480 | 28.52 |
| 2025-12-04 | 09:52:58.29 | -21:16:45.9 | 60.276 | 1.28 | 213.4 | HIP 48480 | 28.98 |
| 2025-12-05 | 09:52:57.07 | -21:17:11.6 | 60.264 | 1.29 | 215.3 | HIP 48480 | 29.45 |
| 2025-12-06 | 09:52:55.79 | -21:17:37.0 | 60.253 | 1.30 | 217.2 | HIP 48323 | 29.85 |
| 2025-12-07 | 09:52:54.44 | -21:18:01.8 | 60.241 | 1.30 | 217.2 | HIP 48323 | 29.76 |