3I/ATLAS
Basic Information of 3I/ATLAS
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | I |
| Perihelion distance (AU) | 1.356435 |
| Eccentricity | 6.139295 |
| Inclination (deg) | 175.113100 |
| Longitude of ascending node (deg) | 322.157100 |
| Argument of perihelion (deg) | 128.010300 |
| Epoch | 2025-11-21T00:00:00.000 |
| Reference | MPEC 2025-VD2, COBS 30 days |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 2025-10-29T11:35:39.840 |
Finding Chart
Sky Tracks
Steps: 3 days · geocentric
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 | 12:34:19.65 | -02:24:01.0 | 2.040 | 117.21 | 289.1 | HIP 61245 | 20.28 |
| 2025-11-22 | 12:31:22.33 | -02:08:39.5 | 2.027 | 119.47 | 289.2 | HIP 61018 | 19.82 |
| 2025-11-23 | 12:28:21.68 | -01:52:57.3 | 2.015 | 121.80 | 289.2 | HIP 61018 | 29.66 |
| 2025-11-24 | 12:25:17.59 | -01:36:54.0 | 2.002 | 124.18 | 289.3 | HIP 60648 | 31.42 |
| 2025-11-25 | 12:22:10.00 | -01:20:29.2 | 1.990 | 126.62 | 289.3 | HIP 60402 | 27.91 |
| 2025-11-26 | 12:18:58.80 | -01:03:42.5 | 1.977 | 129.11 | 289.4 | HIP 60030 | 17.12 |
| 2025-11-27 | 12:15:43.93 | -00:46:33.7 | 1.965 | 131.64 | 289.4 | HIP 59733 | 12.91 |
| 2025-11-28 | 12:12:25.30 | -00:29:02.4 | 1.953 | 134.21 | 289.5 | HIP 59476 | 7.29 |
| 2025-11-29 | 12:09:02.84 | -00:11:08.5 | 1.941 | 136.82 | 289.5 | HIP 59208 | 17.68 |
| 2025-11-30 | 12:05:36.50 | +00:07:08.1 | 1.930 | 139.45 | 289.5 | HIP 58908 | 24.03 |
| 2025-12-01 | 12:02:06.22 | +00:25:47.5 | 1.919 | 142.11 | 289.6 | HIP 58700 | 8.87 |
| 2025-12-02 | 11:58:31.96 | +00:44:49.5 | 1.908 | 144.78 | 289.6 | HIP 58375 | 8.74 |
| 2025-12-03 | 11:54:53.68 | +01:04:14.0 | 1.898 | 147.46 | 289.6 | HIP 58114 | 6.78 |
| 2025-12-04 | 11:51:11.35 | +01:24:00.9 | 1.888 | 150.14 | 289.6 | HIP 57757 | 23.16 |
| 2025-12-05 | 11:47:24.96 | +01:44:09.7 | 1.878 | 152.81 | 289.6 | HIP 57525 | 16.63 |
| 2025-12-06 | 11:43:34.51 | +02:04:40.0 | 1.869 | 155.46 | 289.6 | HIP 57107 | 24.24 |
| 2025-12-07 | 11:39:39.99 | +02:25:31.3 | 1.860 | 155.46 | 289.6 | HIP 56859 | 25.42 |