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) |
|---|---|---|---|---|
| 2026-03-26 00:00 | 18:50:23.68 | -08:39:31.0 | HIP 92423 | 16.98 |
| 2026-03-26 12:00 | 18:50:32.60 | -08:38:38.7 | HIP 92423 | 16.89 |
| 2026-03-27 00:00 | 18:50:41.35 | -08:37:46.4 | HIP 92423 | 17.10 |
| 2026-03-27 12:00 | 18:50:49.94 | -08:36:54.2 | HIP 92423 | 17.60 |
| 2026-03-28 00:00 | 18:50:58.37 | -08:36:02.0 | HIP 92595 | 17.93 |
| 2026-03-28 12:00 | 18:51:06.62 | -08:35:09.8 | HIP 92595 | 15.72 |
| 2026-03-29 00:00 | 18:51:14.71 | -08:34:17.7 | HIP 92595 | 13.55 |
| 2026-03-29 12:00 | 18:51:22.63 | -08:33:25.6 | HIP 92595 | 11.42 |
| 2026-03-30 00:00 | 18:51:30.38 | -08:32:33.6 | HIP 92595 | 9.34 |
| 2026-03-30 12:00 | 18:51:37.97 | -08:31:41.6 | HIP 92595 | 7.29 |
| 2026-03-31 00:00 | 18:51:45.38 | -08:30:49.7 | HIP 92595 | 5.29 |
| 2026-03-31 12:00 | 18:51:52.63 | -08:29:57.9 | HIP 92595 | 3.37 |
| 2026-04-01 00:00 | 18:51:59.70 | -08:29:06.1 | HIP 92595 | 1.62 |
| 2026-04-01 12:00 | 18:52:06.60 | -08:28:14.5 | HIP 92595 | 1.19 |
| 2026-04-02 00:00 | 18:52:13.33 | -08:27:22.9 | HIP 92595 | 2.70 |
| 2026-04-02 12:00 | 18:52:19.89 | -08:26:31.4 | HIP 92595 | 4.45 |
| 2026-04-03 00:00 | 18:52:26.27 | -08:25:40.0 | HIP 92595 | 6.21 |
| 2026-04-03 12:00 | 18:52:32.48 | -08:24:48.8 | HIP 92595 | 7.94 |
| 2026-04-04 00:00 | 18:52:38.52 | -08:23:57.6 | HIP 92595 | 9.65 |
| 2026-04-04 12:00 | 18:52:44.38 | -08:23:06.6 | HIP 92595 | 11.31 |
| 2026-04-05 00:00 | 18:52:50.06 | -08:22:15.7 | HIP 92595 | 12.94 |
| 2026-04-05 12:00 | 18:52:55.57 | -08:21:25.0 | HIP 92595 | 14.53 |
| 2026-04-06 00:00 | 18:53:00.90 | -08:20:34.4 | HIP 92595 | 16.09 |
| 2026-04-06 12:00 | 18:53:06.06 | -08:19:44.0 | HIP 92595 | 17.60 |
| 2026-04-07 00:00 | 18:53:11.03 | -08:18:53.7 | HIP 92595 | 19.08 |
| 2026-04-07 12:00 | 18:53:15.83 | -08:18:03.5 | HIP 92595 | 20.52 |
| 2026-04-08 00:00 | 18:53:20.45 | -08:17:13.6 | HIP 92595 | 21.92 |
| 2026-04-08 12:00 | 18:53:24.89 | -08:16:23.8 | HIP 92595 | 23.28 |
| 2026-04-09 00:00 | 18:53:29.14 | -08:15:34.2 | HIP 92595 | 24.60 |
| 2026-04-09 12:00 | 18:53:33.22 | -08:14:44.8 | HIP 92595 | 25.89 |
| 2026-04-10 00:00 | 18:53:37.11 | -08:13:55.7 | HIP 92595 | 27.13 |
| 2026-04-10 12:00 | 18:53:40.82 | -08:13:06.7 | HIP 92874 | 26.50 |
| 2026-04-11 00:00 | 18:53:44.35 | -08:12:17.9 | HIP 92874 | 25.58 |
| 2026-04-11 12:00 | 18:53:47.69 | -08:11:29.4 | HIP 92874 | 24.73 |
| 2026-04-12 00:00 | 18:53:50.85 | -08:10:41.1 | HIP 92874 | 23.95 |
| 2026-04-12 12:00 | 18:53:53.83 | -08:09:53.0 | HIP 92874 | 23.24 |
| 2026-04-13 00:00 | 18:53:56.62 | -08:09:05.2 | HIP 92874 | 22.62 |
| 2026-04-13 12:00 | 18:53:59.22 | -08:08:17.6 | HIP 92874 | 22.06 |
| 2026-04-14 00:00 | 18:54:01.64 | -08:07:30.3 | HIP 92874 | 21.59 |
| 2026-04-14 12:00 | 18:54:03.87 | -08:06:43.3 | HIP 92874 | 21.20 |
| 2026-04-15 00:00 | 18:54:05.92 | -08:05:56.5 | HIP 92874 | 20.88 |
| 2026-04-15 12:00 | 18:54:07.78 | -08:05:10.1 | HIP 92874 | 20.65 |
| 2026-04-16 00:00 | 18:54:09.45 | -08:04:23.9 | HIP 92874 | 20.50 |