| 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 |
-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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
14:35:51.54 |
-15:37:14.5 |
HIP 71220 |
29.20 |
| 2026-09-25 12:00 |
14:36:14.13 |
-15:38:31.7 |
HIP 71220 |
34.43 |
| 2026-09-26 00:00 |
14:36:36.78 |
-15:39:49.1 |
HIP 71220 |
39.77 |
| 2026-09-26 12:00 |
14:36:59.49 |
-15:41:06.8 |
HIP 71220 |
45.19 |
| 2026-09-27 00:00 |
14:37:22.27 |
-15:42:24.6 |
HIP 71567 |
46.68 |
| 2026-09-27 12:00 |
14:37:45.12 |
-15:43:42.7 |
HIP 71715 |
44.47 |
| 2026-09-28 00:00 |
14:38:08.03 |
-15:45:00.9 |
HIP 71713 |
39.64 |
| 2026-09-28 12:00 |
14:38:31.00 |
-15:46:19.3 |
HIP 71713 |
34.83 |
| 2026-09-29 00:00 |
14:38:54.03 |
-15:47:37.8 |
HIP 71713 |
30.31 |
| 2026-09-29 12:00 |
14:39:17.12 |
-15:48:56.6 |
HIP 71713 |
26.24 |
| 2026-09-30 00:00 |
14:39:40.28 |
-15:50:15.5 |
HIP 71713 |
22.87 |
| 2026-09-30 12:00 |
14:40:03.50 |
-15:51:34.6 |
HIP 71713 |
20.56 |
| 2026-10-01 00:00 |
14:40:26.78 |
-15:52:53.8 |
HIP 71743 |
19.68 |
| 2026-10-01 12:00 |
14:40:50.11 |
-15:54:13.2 |
HIP 71743 |
18.88 |
| 2026-10-02 00:00 |
14:41:13.51 |
-15:55:32.7 |
HIP 71743 |
19.81 |
| 2026-10-02 12:00 |
14:41:36.96 |
-15:56:52.4 |
HIP 71743 |
22.26 |
| 2026-10-03 00:00 |
14:42:00.48 |
-15:58:12.2 |
HIP 71743 |
25.81 |
| 2026-10-03 12:00 |
14:42:24.05 |
-15:59:32.1 |
HIP 71743 |
30.07 |
| 2026-10-04 00:00 |
14:42:47.68 |
-16:00:52.2 |
HIP 71743 |
34.80 |
| 2026-10-04 12:00 |
14:43:11.36 |
-16:02:12.4 |
HIP 71743 |
39.84 |
| 2026-10-05 00:00 |
14:43:35.10 |
-16:03:32.7 |
HIP 71743 |
45.08 |
| 2026-10-05 12:00 |
14:43:58.90 |
-16:04:53.2 |
HIP 72161 |
46.04 |
| 2026-10-06 00:00 |
14:44:22.75 |
-16:06:13.7 |
HIP 72161 |
42.21 |
| 2026-10-06 12:00 |
14:44:46.66 |
-16:07:34.4 |
HIP 72292 |
38.65 |
| 2026-10-07 00:00 |
14:45:10.61 |
-16:08:55.1 |
HIP 72292 |
33.14 |
| 2026-10-07 12:00 |
14:45:34.63 |
-16:10:15.9 |
HIP 72292 |
27.78 |
| 2026-10-08 00:00 |
14:45:58.69 |
-16:11:36.9 |
HIP 72292 |
22.69 |
| 2026-10-08 12:00 |
14:46:22.80 |
-16:12:57.9 |
HIP 72292 |
18.12 |
| 2026-10-09 00:00 |
14:46:46.97 |
-16:14:19.0 |
HIP 72292 |
14.56 |
| 2026-10-09 12:00 |
14:47:11.19 |
-16:15:40.1 |
HIP 72292 |
12.91 |
| 2026-10-10 00:00 |
14:47:35.45 |
-16:17:01.3 |
HIP 72292 |
13.87 |
| 2026-10-10 12:00 |
14:47:59.77 |
-16:18:22.6 |
HIP 72292 |
17.03 |
| 2026-10-11 00:00 |
14:48:24.13 |
-16:19:43.9 |
HIP 72292 |
21.44 |
| 2026-10-11 12:00 |
14:48:48.54 |
-16:21:05.3 |
HIP 72560 |
19.29 |
| 2026-10-12 00:00 |
14:49:13.00 |
-16:22:26.8 |
HIP 72560 |
13.28 |
| 2026-10-12 12:00 |
14:49:37.50 |
-16:23:48.2 |
HIP 72560 |
7.29 |
| 2026-10-13 00:00 |
14:50:02.05 |
-16:25:09.7 |
HIP 72560 |
1.58 |
| 2026-10-13 12:00 |
14:50:26.64 |
-16:26:31.3 |
HIP 72560 |
5.00 |
| 2026-10-14 00:00 |
14:50:51.28 |
-16:27:52.8 |
HIP 72560 |
11.00 |
| 2026-10-14 12:00 |
14:51:15.96 |
-16:29:14.4 |
HIP 72560 |
17.05 |
| 2026-10-15 00:00 |
14:51:40.68 |
-16:30:36.0 |
HIP 72784 |
15.49 |
| 2026-10-15 12:00 |
14:52:05.44 |
-16:31:57.6 |
HIP 72784 |
11.39 |
| 2026-10-16 00:00 |
14:52:30.25 |
-16:33:19.2 |
HIP 72784 |
9.68 |