C/2021 C4 (ATLAS)
Basic Information of C/2021 C4 (ATLAS)
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | C |
| Perihelion distance (AU) | 4.492620 |
| Eccentricity | 0.998537 |
| Inclination (deg) | 132.826100 |
| Longitude of ascending node (deg) | 194.211100 |
| Argument of perihelion (deg) | 319.995000 |
| Epoch | 2025-11-21T00:00:00.000 |
| Reference | MPEC 2025-UQ3, MPC orbital elements |
| Period (years) | 170170.016133 |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 2021-01-15T21:07:46.560 |
| Period (years) | 170170.016133 |
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 | 11:00:23.74 | +54:33:51.3 | 12.925 | 10.05 | 5.5 | HIP 53834 | 14.16 |
| 2025-11-22 | 11:00:26.42 | +54:37:51.3 | 12.918 | 10.13 | 4.5 | HIP 53834 | 17.98 |
| 2025-11-23 | 11:00:28.60 | +54:41:53.7 | 12.911 | 10.21 | 3.4 | HIP 53834 | 21.92 |
| 2025-11-24 | 11:00:30.29 | +54:45:58.4 | 12.903 | 10.30 | 2.4 | HIP 53680 | 19.60 |
| 2025-11-25 | 11:00:31.48 | +54:50:05.3 | 12.896 | 10.38 | 1.4 | HIP 53680 | 16.85 |
| 2025-11-26 | 11:00:32.17 | +54:54:14.4 | 12.889 | 10.47 | 0.3 | HIP 53680 | 14.67 |
| 2025-11-27 | 11:00:32.34 | +54:58:25.6 | 12.882 | 10.55 | 359.3 | HIP 53680 | 13.38 |
| 2025-11-28 | 11:00:32.00 | +55:02:38.9 | 12.875 | 10.64 | 358.3 | HIP 53680 | 13.27 |
| 2025-11-29 | 11:00:31.13 | +55:06:54.2 | 12.868 | 10.73 | 357.4 | HIP 53680 | 14.40 |
| 2025-11-30 | 11:00:29.74 | +55:11:11.4 | 12.862 | 10.82 | 356.4 | HIP 53680 | 16.54 |
| 2025-12-01 | 11:00:27.82 | +55:15:30.5 | 12.855 | 10.91 | 355.4 | HIP 53680 | 19.38 |
| 2025-12-02 | 11:00:25.37 | +55:19:51.4 | 12.848 | 10.99 | 354.5 | HIP 53600 | 21.82 |
| 2025-12-03 | 11:00:22.38 | +55:24:14.1 | 12.842 | 11.08 | 353.5 | HIP 53600 | 20.61 |
| 2025-12-04 | 11:00:18.84 | +55:28:38.4 | 12.836 | 11.17 | 352.6 | HIP 53600 | 20.24 |
| 2025-12-05 | 11:00:14.77 | +55:33:04.3 | 12.829 | 11.26 | 351.7 | HIP 53600 | 20.75 |
| 2025-12-06 | 11:00:10.14 | +55:37:31.7 | 12.823 | 11.35 | 350.7 | HIP 53600 | 22.13 |
| 2025-12-07 | 11:00:04.95 | +55:42:00.6 | 12.817 | 11.35 | 350.7 | HIP 53584 | 21.36 |