1I/`Oumuamua
Basic Information of 1I/`Oumuamua
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | I |
| Perihelion distance (AU) | 0.255240 |
| Eccentricity | 1.199252 |
| Inclination (deg) | 122.677800 |
| Longitude of ascending node (deg) | 24.599700 |
| Argument of perihelion (deg) | 241.684500 |
| Epoch | 2017-09-04T00:00:00.000 |
| Reference | MPC107687, MPC orbital elements |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 2017-09-09T11:43:35.040 |
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 | 23:51:05.51 | +24:09:30.8 | 49.030 | 2.09 | 218.6 | HIP 117534 | 25.10 |
| 2025-11-22 | 23:51:03.23 | +24:08:51.6 | 49.058 | 2.05 | 217.8 | HIP 117534 | 24.27 |
| 2025-11-23 | 23:51:01.02 | +24:08:12.7 | 49.086 | 2.02 | 216.9 | HIP 117534 | 23.46 |
| 2025-11-24 | 23:50:58.89 | +24:07:33.9 | 49.115 | 1.99 | 216.1 | HIP 117534 | 22.66 |
| 2025-11-25 | 23:50:56.84 | +24:06:55.4 | 49.143 | 1.95 | 215.1 | HIP 117534 | 21.87 |
| 2025-11-26 | 23:50:54.88 | +24:06:17.1 | 49.172 | 1.92 | 214.2 | HIP 117534 | 21.09 |
| 2025-11-27 | 23:50:52.99 | +24:05:39.1 | 49.201 | 1.88 | 213.2 | HIP 117534 | 20.33 |
| 2025-11-28 | 23:50:51.18 | +24:05:01.3 | 49.230 | 1.85 | 212.2 | HIP 117534 | 19.58 |
| 2025-11-29 | 23:50:49.46 | +24:04:23.8 | 49.260 | 1.81 | 211.1 | HIP 117534 | 18.84 |
| 2025-11-30 | 23:50:47.82 | +24:03:46.6 | 49.289 | 1.78 | 210.0 | HIP 117534 | 18.12 |
| 2025-12-01 | 23:50:46.26 | +24:03:09.7 | 49.319 | 1.74 | 208.9 | HIP 117534 | 17.41 |
| 2025-12-02 | 23:50:44.78 | +24:02:33.0 | 49.349 | 1.71 | 207.7 | HIP 117534 | 16.71 |
| 2025-12-03 | 23:50:43.39 | +24:01:56.7 | 49.378 | 1.68 | 206.5 | HIP 117534 | 16.03 |
| 2025-12-04 | 23:50:42.08 | +24:01:20.7 | 49.408 | 1.64 | 205.3 | HIP 117534 | 15.36 |
| 2025-12-05 | 23:50:40.85 | +24:00:45.1 | 49.439 | 1.61 | 203.9 | HIP 117534 | 14.70 |
| 2025-12-06 | 23:50:39.71 | +24:00:09.8 | 49.469 | 1.58 | 202.6 | HIP 117534 | 14.06 |
| 2025-12-07 | 23:50:38.65 | +23:59:34.9 | 49.499 | 1.58 | 202.6 | HIP 117534 | 13.43 |