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) |
|---|---|---|---|---|
| 2026-02-03 00:00 | 18:23:08.89 | -09:51:16.8 | HIP 90083 | 21.92 |
| 2026-02-03 12:00 | 18:23:30.45 | -09:50:53.4 | HIP 90083 | 23.31 |
| 2026-02-04 00:00 | 18:23:51.94 | -09:50:29.6 | HIP 90083 | 25.75 |
| 2026-02-04 12:00 | 18:24:13.34 | -09:50:05.3 | HIP 90320 | 22.66 |
| 2026-02-05 00:00 | 18:24:34.66 | -09:49:40.4 | HIP 90320 | 17.46 |
| 2026-02-05 12:00 | 18:24:55.90 | -09:49:15.0 | HIP 90320 | 12.33 |
| 2026-02-06 00:00 | 18:25:17.05 | -09:48:49.1 | HIP 90320 | 7.39 |
| 2026-02-06 12:00 | 18:25:38.12 | -09:48:22.7 | HIP 90320 | 3.43 |
| 2026-02-07 00:00 | 18:25:59.10 | -09:47:55.8 | HIP 90320 | 4.79 |
| 2026-02-07 12:00 | 18:26:19.99 | -09:47:28.4 | HIP 90320 | 9.36 |
| 2026-02-08 00:00 | 18:26:40.80 | -09:47:00.6 | HIP 90320 | 14.32 |
| 2026-02-08 12:00 | 18:27:01.52 | -09:46:32.2 | HIP 90320 | 19.36 |
| 2026-02-09 00:00 | 18:27:22.14 | -09:46:03.3 | HIP 90529 | 18.02 |
| 2026-02-09 12:00 | 18:27:42.68 | -09:45:34.0 | HIP 90529 | 13.96 |
| 2026-02-10 00:00 | 18:28:03.13 | -09:45:04.2 | HIP 90529 | 10.83 |
| 2026-02-10 12:00 | 18:28:23.48 | -09:44:33.9 | HIP 90529 | 9.51 |
| 2026-02-11 00:00 | 18:28:43.75 | -09:44:03.1 | HIP 90529 | 10.69 |
| 2026-02-11 12:00 | 18:29:03.91 | -09:43:31.9 | HIP 90529 | 13.70 |
| 2026-02-12 00:00 | 18:29:23.99 | -09:43:00.2 | HIP 90529 | 17.62 |
| 2026-02-12 12:00 | 18:29:43.96 | -09:42:28.0 | HIP 90529 | 21.94 |
| 2026-02-13 00:00 | 18:30:03.84 | -09:41:55.4 | HIP 90633 | 25.61 |
| 2026-02-13 12:00 | 18:30:23.63 | -09:41:22.3 | HIP 90633 | 26.88 |
| 2026-02-14 00:00 | 18:30:43.31 | -09:40:48.8 | HIP 90867 | 28.67 |
| 2026-02-14 12:00 | 18:31:02.90 | -09:40:14.8 | HIP 90867 | 24.77 |
| 2026-02-15 00:00 | 18:31:22.38 | -09:39:40.4 | HIP 90867 | 21.29 |
| 2026-02-15 12:00 | 18:31:41.76 | -09:39:05.6 | HIP 90867 | 18.43 |
| 2026-02-16 00:00 | 18:32:01.04 | -09:38:30.4 | HIP 90867 | 16.50 |
| 2026-02-16 12:00 | 18:32:20.22 | -09:37:54.7 | HIP 90867 | 15.83 |
| 2026-02-17 00:00 | 18:32:39.29 | -09:37:18.6 | HIP 90867 | 16.54 |
| 2026-02-17 12:00 | 18:32:58.26 | -09:36:42.1 | HIP 90867 | 18.47 |
| 2026-02-18 00:00 | 18:33:17.12 | -09:36:05.2 | HIP 90867 | 21.25 |
| 2026-02-18 12:00 | 18:33:35.88 | -09:35:27.8 | HIP 90867 | 24.60 |
| 2026-02-19 00:00 | 18:33:54.52 | -09:34:50.1 | HIP 90867 | 28.30 |
| 2026-02-19 12:00 | 18:34:13.06 | -09:34:12.0 | HIP 90867 | 32.21 |
| 2026-02-20 00:00 | 18:34:31.49 | -09:33:33.5 | HIP 91133 | 32.91 |
| 2026-02-20 12:00 | 18:34:49.81 | -09:32:54.6 | HIP 91133 | 30.85 |
| 2026-02-21 00:00 | 18:35:08.01 | -09:32:15.4 | HIP 91133 | 29.37 |
| 2026-02-21 12:00 | 18:35:26.11 | -09:31:35.7 | HIP 91133 | 28.52 |
| 2026-02-22 00:00 | 18:35:44.09 | -09:30:55.7 | HIP 91133 | 28.37 |
| 2026-02-22 12:00 | 18:36:01.96 | -09:30:15.4 | HIP 91133 | 28.90 |
| 2026-02-23 00:00 | 18:36:19.71 | -09:29:34.6 | HIP 91133 | 30.08 |
| 2026-02-23 12:00 | 18:36:37.35 | -09:28:53.6 | HIP 91133 | 31.81 |
| 2026-02-24 00:00 | 18:36:54.87 | -09:28:12.2 | HIP 91133 | 34.01 |