C/1991 L4 (Helin-Alu)
Basic Information of C/1991 L4 (Helin-Alu)
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | C |
| Perihelion distance (AU) | 4.893004 |
| Eccentricity | 1.001528 |
| Inclination (deg) | 49.165300 |
| Longitude of ascending node (deg) | 253.744900 |
| Argument of perihelion (deg) | 30.974000 |
| Epoch | 2023-02-25T00:00:00.000 |
| Reference | , MPC orbital elements |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 1992-02-24T13:41:48.480 |
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 | 04:37:07.51 | +25:15:10.6 | 53.376 | 2.65 | 259.9 | HIP 21532 | 28.73 |
| 2025-11-22 | 04:37:02.90 | +25:14:59.6 | 53.375 | 2.66 | 259.9 | HIP 21532 | 29.07 |
| 2025-11-23 | 04:36:58.27 | +25:14:48.4 | 53.375 | 2.67 | 259.8 | HIP 21532 | 29.45 |
| 2025-11-24 | 04:36:53.63 | +25:14:37.1 | 53.375 | 2.67 | 259.8 | HIP 21532 | 29.86 |
| 2025-11-25 | 04:36:48.98 | +25:14:25.7 | 53.376 | 2.68 | 259.7 | HIP 21532 | 30.30 |
| 2025-11-26 | 04:36:44.31 | +25:14:14.2 | 53.377 | 2.69 | 259.7 | HIP 21532 | 30.78 |
| 2025-11-27 | 04:36:39.64 | +25:14:02.6 | 53.378 | 2.69 | 259.6 | HIP 21532 | 31.29 |
| 2025-11-28 | 04:36:34.95 | +25:13:50.9 | 53.380 | 2.70 | 259.5 | HIP 21532 | 31.83 |
| 2025-11-29 | 04:36:30.26 | +25:13:39.1 | 53.381 | 2.70 | 259.5 | HIP 21532 | 32.40 |
| 2025-11-30 | 04:36:25.56 | +25:13:27.3 | 53.384 | 2.70 | 259.4 | HIP 21532 | 33.00 |
| 2025-12-01 | 04:36:20.86 | +25:13:15.4 | 53.386 | 2.70 | 259.3 | HIP 21532 | 33.62 |
| 2025-12-02 | 04:36:16.16 | +25:13:03.3 | 53.389 | 2.71 | 259.3 | HIP 21532 | 34.27 |
| 2025-12-03 | 04:36:11.46 | +25:12:51.3 | 53.392 | 2.71 | 259.2 | HIP 21532 | 34.94 |
| 2025-12-04 | 04:36:06.76 | +25:12:39.1 | 53.395 | 2.70 | 259.1 | HIP 21532 | 35.63 |
| 2025-12-05 | 04:36:02.06 | +25:12:26.9 | 53.399 | 2.70 | 259.1 | HIP 21532 | 36.33 |
| 2025-12-06 | 04:35:57.37 | +25:12:14.6 | 53.403 | 2.70 | 259.0 | HIP 21532 | 37.06 |
| 2025-12-07 | 04:35:52.68 | +25:12:02.2 | 53.407 | 2.70 | 259.0 | HIP 21532 | 37.81 |