482P/PANSTARRS
Metadata
| Parameter | Value |
|---|---|
| Designation | 482P/PANSTARRS |
| Type | P |
| Perihelion (tp_cal, UTC) | 2023-06-01T11:41:00.064320Z |
| Orbit solution date (soln_date, UTC) | 2024-05-14T12:42:42Z |
| Obs used | 97 |
| NEO | - |
| M1 | 17.000 |
| K1 | 4.500 |
| PC | - |
| Discovery observation (MPC, UTC) | 2014-11-10T09:56:26.880000Z |
| Discovery magnitude (MPC) | 20.20 i |
| Discovery observatory (MPC) | F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter | Value |
|---|---|
| Epoch (epoch_cal, TDB) | 2022-03-17.0000000 |
| e | 0.49292758 |
| q (au) | 1.907487 |
| a (au) | 3.761765 |
| i (deg) | 24.516413 |
| Ω (om, deg) | 126.216135 |
| ω (w, deg) | 339.380217 |
| M (ma, deg) | 300.360460 |
Magnitude
Scatter + Global Linear
$$ M_a = (15.788 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
Model Parameters
| Parameter | Value |
|---|---|
| H0 | 15.788 |
| n | 2.000 |
| gf | 1.000 |
| gb | -1.000 |
| k | 1.000 |
| δ90 | 10.000 |
| Parameter | Symbol | Range | Description |
|---|---|---|---|
| Absolute magnitude at 1 AU from Sun and Earth | H0 | -5 to 20 | Intrinsic brightness of the comet |
| Photometric slope parameter | n | 2 to 6 | Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor | gf |
0.8 to 1 | Degree of forward scattering |
| Backward scattering asymmetry factor | gb |
-1 to -0.5 | Degree of backward scattering |
| Partitioning coefficient | k | 0.8 to 1 | Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio | δ90 | 1 to 10 | Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) | End (UTC) | a | b |
|---|---|---|---|
| 2021-08-09 | 2022-12-22 | -1.3509 | +0.947 |
| 2024-01-20 | 2024-05-10 | +11.6926 | -5.860 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Finding Chart
Ephemeris
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-09-20 00:00 | 18:03:08.05 | -12:19:05.0 | HIP 88326 | 11.19 |
| 2026-09-20 12:00 | 18:03:13.34 | -12:20:41.4 | HIP 88326 | 12.58 |
| 2026-09-21 00:00 | 18:03:18.81 | -12:22:17.5 | HIP 88326 | 14.18 |
| 2026-09-21 12:00 | 18:03:24.45 | -12:23:53.3 | HIP 88326 | 15.93 |
| 2026-09-22 00:00 | 18:03:30.27 | -12:25:28.9 | HIP 88326 | 17.79 |
| 2026-09-22 12:00 | 18:03:36.25 | -12:27:04.1 | HIP 88462 | 19.16 |
| 2026-09-23 00:00 | 18:03:42.41 | -12:28:39.1 | HIP 88462 | 17.51 |
| 2026-09-23 12:00 | 18:03:48.73 | -12:30:13.7 | HIP 88462 | 16.00 |
| 2026-09-24 00:00 | 18:03:55.23 | -12:31:48.0 | HIP 88462 | 14.69 |
| 2026-09-24 12:00 | 18:04:01.89 | -12:33:22.1 | HIP 88462 | 13.63 |
| 2026-09-25 00:00 | 18:04:08.73 | -12:34:55.8 | HIP 88462 | 12.91 |
| 2026-09-25 12:00 | 18:04:15.73 | -12:36:29.2 | HIP 88462 | 12.59 |
| 2026-09-26 00:00 | 18:04:22.89 | -12:38:02.2 | HIP 88462 | 12.74 |
| 2026-09-26 12:00 | 18:04:30.22 | -12:39:35.0 | HIP 88462 | 13.33 |
| 2026-09-27 00:00 | 18:04:37.72 | -12:41:07.4 | HIP 88462 | 14.34 |
| 2026-09-27 12:00 | 18:04:45.38 | -12:42:39.5 | HIP 88462 | 15.69 |
| 2026-09-28 00:00 | 18:04:53.20 | -12:44:11.2 | HIP 88462 | 17.31 |
| 2026-09-28 12:00 | 18:05:01.19 | -12:45:42.6 | HIP 88462 | 19.15 |
| 2026-09-29 00:00 | 18:05:09.34 | -12:47:13.7 | HIP 88462 | 21.15 |
| 2026-09-29 12:00 | 18:05:17.65 | -12:48:44.4 | HIP 88462 | 23.30 |
| 2026-09-30 00:00 | 18:05:26.13 | -12:50:14.8 | HIP 88462 | 25.55 |
| 2026-09-30 12:00 | 18:05:34.76 | -12:51:44.9 | HIP 88462 | 27.89 |
| 2026-10-01 00:00 | 18:05:43.55 | -12:53:14.5 | HIP 88748 | 28.37 |
| 2026-10-01 12:00 | 18:05:52.50 | -12:54:43.9 | HIP 88748 | 25.81 |
| 2026-10-02 00:00 | 18:06:01.61 | -12:56:12.8 | HIP 88748 | 23.24 |
| 2026-10-02 12:00 | 18:06:10.88 | -12:57:41.4 | HIP 88748 | 20.68 |
| 2026-10-03 00:00 | 18:06:20.31 | -12:59:09.7 | HIP 88748 | 18.15 |
| 2026-10-03 12:00 | 18:06:29.89 | -13:00:37.5 | HIP 88748 | 15.66 |
| 2026-10-04 00:00 | 18:06:39.63 | -13:02:05.0 | HIP 88748 | 13.27 |
| 2026-10-04 12:00 | 18:06:49.52 | -13:03:32.1 | HIP 88748 | 11.06 |
| 2026-10-05 00:00 | 18:06:59.57 | -13:04:58.9 | HIP 88748 | 9.20 |
| 2026-10-05 12:00 | 18:07:09.77 | -13:06:25.2 | HIP 88748 | 7.94 |
| 2026-10-06 00:00 | 18:07:20.13 | -13:07:51.2 | HIP 88748 | 7.65 |
| 2026-10-06 12:00 | 18:07:30.64 | -13:09:16.7 | HIP 88748 | 8.44 |
| 2026-10-07 00:00 | 18:07:41.30 | -13:10:41.9 | HIP 88748 | 10.10 |
| 2026-10-07 12:00 | 18:07:52.11 | -13:12:06.7 | HIP 88748 | 12.29 |
| 2026-10-08 00:00 | 18:08:03.08 | -13:13:31.1 | HIP 88748 | 14.80 |
| 2026-10-08 12:00 | 18:08:14.19 | -13:14:55.0 | HIP 88748 | 17.51 |
| 2026-10-09 00:00 | 18:08:25.45 | -13:16:18.6 | HIP 88748 | 20.35 |
| 2026-10-09 12:00 | 18:08:36.86 | -13:17:41.8 | HIP 88748 | 23.28 |
| 2026-10-10 00:00 | 18:08:48.42 | -13:19:04.5 | HIP 89013 | 22.55 |
| 2026-10-10 12:00 | 18:09:00.13 | -13:20:26.8 | HIP 89013 | 19.46 |
| 2026-10-11 00:00 | 18:09:11.98 | -13:21:48.7 | HIP 89013 | 16.39 |