C/2021 A7 (NEOWISE)
Basic Information of C/2021 A7 (NEOWISE)
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | C |
| Perihelion distance (AU) | 1.965721 |
| Eccentricity | 0.999009 |
| Inclination (deg) | 78.235900 |
| Longitude of ascending node (deg) | 154.380400 |
| Argument of perihelion (deg) | 356.015300 |
| Epoch | 2025-11-21T00:00:00.000 |
| Reference | MPEC 2022-M88, MPC orbital elements |
| Period (years) | 88343.038861 |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 2021-07-15T04:38:21.120 |
| Period (years) | 88343.038861 |
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 | 20:12:40.98 | +28:49:07.6 | 13.408 | 10.11 | 139.5 | HIP 99524 | 20.53 |
| 2025-11-22 | 20:12:52.97 | +28:46:03.2 | 13.426 | 10.12 | 138.4 | HIP 99738 | 18.40 |
| 2025-11-23 | 20:13:05.22 | +28:43:01.5 | 13.443 | 10.13 | 137.4 | HIP 99738 | 15.25 |
| 2025-11-24 | 20:13:17.73 | +28:40:02.6 | 13.461 | 10.15 | 136.4 | HIP 99738 | 12.56 |
| 2025-11-25 | 20:13:30.49 | +28:37:06.3 | 13.478 | 10.16 | 135.3 | HIP 99738 | 10.69 |
| 2025-11-26 | 20:13:43.51 | +28:34:12.9 | 13.496 | 10.17 | 134.3 | HIP 99738 | 10.11 |
| 2025-11-27 | 20:13:56.76 | +28:31:22.3 | 13.513 | 10.19 | 133.3 | HIP 99738 | 11.03 |
| 2025-11-28 | 20:14:10.26 | +28:28:34.5 | 13.530 | 10.21 | 132.3 | HIP 99738 | 13.15 |
| 2025-11-29 | 20:14:23.99 | +28:25:49.6 | 13.547 | 10.22 | 131.3 | HIP 99738 | 16.00 |
| 2025-11-30 | 20:14:37.95 | +28:23:07.5 | 13.564 | 10.24 | 130.3 | HIP 99738 | 19.27 |
| 2025-12-01 | 20:14:52.14 | +28:20:28.4 | 13.582 | 10.26 | 129.4 | HIP 99738 | 22.77 |
| 2025-12-02 | 20:15:06.55 | +28:17:52.2 | 13.599 | 10.28 | 128.4 | HIP 99942 | 24.49 |
| 2025-12-03 | 20:15:21.18 | +28:15:19.0 | 13.616 | 10.30 | 127.4 | HIP 99942 | 23.54 |
| 2025-12-04 | 20:15:36.03 | +28:12:48.7 | 13.632 | 10.32 | 126.5 | HIP 99942 | 23.22 |
| 2025-12-05 | 20:15:51.08 | +28:10:21.4 | 13.649 | 10.34 | 125.6 | HIP 99874 | 21.53 |
| 2025-12-06 | 20:16:06.34 | +28:07:57.1 | 13.666 | 10.36 | 124.6 | HIP 100020 | 19.60 |
| 2025-12-07 | 20:16:21.80 | +28:05:35.8 | 13.683 | 10.36 | 124.6 | HIP 100020 | 16.19 |