480P/PANSTARRS
| Parameter |
Value |
| Designation |
480P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-04-22T13:13:52.207680Z |
| Orbit solution date (soln_date, UTC) |
2025-03-06T13:42:38Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
8.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-12-09T12:43:08.284800Z |
| Discovery magnitude (MPC) |
21.55 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-08-10.0000000 |
| e |
0.24183035 |
| q (au) |
3.525821 |
| a (au) |
4.650438 |
| i (deg) |
13.697578 |
| Ω (om, deg) |
230.461069 |
| ω (w, deg) |
212.102521 |
| M (ma, deg) |
191.298088 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.955 + 3.109\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.955 |
| n |
3.109 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
14:34:42.47 |
-19:57:30.1 |
HIP 71242 |
27.45 |
| 2026-02-03 12:00 |
14:34:51.20 |
-19:58:03.8 |
HIP 71295 |
28.30 |
| 2026-02-04 00:00 |
14:34:59.74 |
-19:58:36.5 |
HIP 71295 |
27.83 |
| 2026-02-04 12:00 |
14:35:08.09 |
-19:59:08.3 |
HIP 71295 |
27.53 |
| 2026-02-05 00:00 |
14:35:16.26 |
-19:59:39.2 |
HIP 71295 |
27.37 |
| 2026-02-05 12:00 |
14:35:24.24 |
-20:00:09.2 |
HIP 71295 |
27.36 |
| 2026-02-06 00:00 |
14:35:32.03 |
-20:00:38.2 |
HIP 71295 |
27.49 |
| 2026-02-06 12:00 |
14:35:39.64 |
-20:01:06.4 |
HIP 71295 |
27.74 |
| 2026-02-07 00:00 |
14:35:47.05 |
-20:01:33.5 |
HIP 71295 |
28.10 |
| 2026-02-07 12:00 |
14:35:54.28 |
-20:01:59.8 |
HIP 71295 |
28.57 |
| 2026-02-08 00:00 |
14:36:01.31 |
-20:02:25.1 |
HIP 71295 |
29.11 |
| 2026-02-08 12:00 |
14:36:08.15 |
-20:02:49.4 |
HIP 71295 |
29.73 |
| 2026-02-09 00:00 |
14:36:14.80 |
-20:03:12.8 |
HIP 71295 |
30.41 |
| 2026-02-09 12:00 |
14:36:21.25 |
-20:03:35.2 |
HIP 71295 |
31.14 |
| 2026-02-10 00:00 |
14:36:27.51 |
-20:03:56.7 |
HIP 71295 |
31.91 |
| 2026-02-10 12:00 |
14:36:33.58 |
-20:04:17.1 |
HIP 71614 |
32.27 |
| 2026-02-11 00:00 |
14:36:39.45 |
-20:04:36.7 |
HIP 71614 |
31.02 |
| 2026-02-11 12:00 |
14:36:45.12 |
-20:04:55.2 |
HIP 71614 |
29.82 |
| 2026-02-12 00:00 |
14:36:50.59 |
-20:05:12.8 |
HIP 71614 |
28.68 |
| 2026-02-12 12:00 |
14:36:55.87 |
-20:05:29.3 |
HIP 71614 |
27.59 |
| 2026-02-13 00:00 |
14:37:00.95 |
-20:05:44.9 |
HIP 71614 |
26.55 |
| 2026-02-13 12:00 |
14:37:05.83 |
-20:05:59.5 |
HIP 71614 |
25.57 |
| 2026-02-14 00:00 |
14:37:10.52 |
-20:06:13.1 |
HIP 71614 |
24.64 |
| 2026-02-14 12:00 |
14:37:15.00 |
-20:06:25.7 |
HIP 71614 |
23.76 |
| 2026-02-15 00:00 |
14:37:19.28 |
-20:06:37.3 |
HIP 71614 |
22.94 |
| 2026-02-15 12:00 |
14:37:23.36 |
-20:06:47.9 |
HIP 71614 |
22.16 |
| 2026-02-16 00:00 |
14:37:27.23 |
-20:06:57.4 |
HIP 71614 |
21.44 |
| 2026-02-16 12:00 |
14:37:30.91 |
-20:07:06.0 |
HIP 71614 |
20.76 |
| 2026-02-17 00:00 |
14:37:34.38 |
-20:07:13.5 |
HIP 71614 |
20.13 |
| 2026-02-17 12:00 |
14:37:37.65 |
-20:07:20.0 |
HIP 71614 |
19.54 |
| 2026-02-18 00:00 |
14:37:40.72 |
-20:07:25.5 |
HIP 71614 |
19.00 |
| 2026-02-18 12:00 |
14:37:43.59 |
-20:07:29.9 |
HIP 71614 |
18.50 |
| 2026-02-19 00:00 |
14:37:46.25 |
-20:07:33.3 |
HIP 71614 |
18.04 |
| 2026-02-19 12:00 |
14:37:48.70 |
-20:07:35.7 |
HIP 71614 |
17.61 |
| 2026-02-20 00:00 |
14:37:50.95 |
-20:07:37.0 |
HIP 71614 |
17.22 |
| 2026-02-20 12:00 |
14:37:53.00 |
-20:07:37.3 |
HIP 71614 |
16.86 |
| 2026-02-21 00:00 |
14:37:54.84 |
-20:07:36.6 |
HIP 71614 |
16.52 |
| 2026-02-21 12:00 |
14:37:56.48 |
-20:07:34.8 |
HIP 71614 |
16.22 |
| 2026-02-22 00:00 |
14:37:57.91 |
-20:07:31.9 |
HIP 71614 |
15.94 |
| 2026-02-22 12:00 |
14:37:59.14 |
-20:07:28.0 |
HIP 71614 |
15.69 |
| 2026-02-23 00:00 |
14:38:00.17 |
-20:07:23.1 |
HIP 71614 |
15.46 |
| 2026-02-23 12:00 |
14:38:00.99 |
-20:07:17.0 |
HIP 71614 |
15.26 |
| 2026-02-24 00:00 |
14:38:01.60 |
-20:07:10.0 |
HIP 71614 |
15.07 |