C/1999 S2 (McNaught-Watson)
Basic Information of C/1999 S2 (McNaught-Watson)
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | C |
| Perihelion distance (AU) | 6.504358 |
| Eccentricity | 1.002390 |
| Inclination (deg) | 65.619200 |
| Longitude of ascending node (deg) | 74.444900 |
| Argument of perihelion (deg) | 223.482900 |
| Epoch | 2025-11-21T00:00:00.000 |
| Reference | MPC 43758, MPC orbital elements |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 1997-11-07T18:05:02.400 |
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 | 04:53:05.22 | +21:54:41.9 | 45.406 | 3.10 | 267.5 | HIP 22715 | 19.43 |
| 2025-11-22 | 04:52:59.89 | +21:54:38.7 | 45.405 | 3.11 | 267.5 | HIP 22715 | 19.51 |
| 2025-11-23 | 04:52:54.53 | +21:54:35.5 | 45.404 | 3.12 | 267.5 | HIP 22715 | 19.68 |
| 2025-11-24 | 04:52:49.15 | +21:54:32.2 | 45.403 | 3.14 | 267.5 | HIP 22715 | 19.92 |
| 2025-11-25 | 04:52:43.74 | +21:54:28.9 | 45.403 | 3.15 | 267.5 | HIP 22715 | 20.23 |
| 2025-11-26 | 04:52:38.32 | +21:54:25.6 | 45.403 | 3.16 | 267.5 | HIP 22715 | 20.62 |
| 2025-11-27 | 04:52:32.88 | +21:54:22.2 | 45.404 | 3.17 | 267.5 | HIP 22715 | 21.08 |
| 2025-11-28 | 04:52:27.42 | +21:54:18.9 | 45.404 | 3.18 | 267.5 | HIP 22715 | 21.61 |
| 2025-11-29 | 04:52:21.95 | +21:54:15.5 | 45.405 | 3.18 | 267.4 | HIP 22715 | 22.20 |
| 2025-11-30 | 04:52:16.46 | +21:54:12.1 | 45.407 | 3.19 | 267.4 | HIP 22715 | 22.84 |
| 2025-12-01 | 04:52:10.97 | +21:54:08.6 | 45.408 | 3.19 | 267.4 | HIP 22715 | 23.54 |
| 2025-12-02 | 04:52:05.46 | +21:54:05.2 | 45.410 | 3.20 | 267.4 | HIP 22715 | 24.28 |
| 2025-12-03 | 04:51:59.95 | +21:54:01.7 | 45.412 | 3.20 | 267.4 | HIP 22715 | 25.07 |
| 2025-12-04 | 04:51:54.44 | +21:53:58.3 | 45.415 | 3.20 | 267.4 | HIP 22715 | 25.90 |
| 2025-12-05 | 04:51:48.92 | +21:53:54.8 | 45.418 | 3.21 | 267.4 | HIP 22715 | 26.77 |
| 2025-12-06 | 04:51:43.40 | +21:53:51.4 | 45.421 | 3.21 | 267.4 | HIP 22443 | 27.43 |
| 2025-12-07 | 04:51:37.87 | +21:53:47.9 | 45.425 | 3.21 | 267.4 | HIP 22443 | 26.17 |