| Parameter |
Value |
| Designation |
470P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-12-19T19:12:04.207680Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:19Z |
| Obs used |
210 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
11.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-07-30T12:57:55.440000Z |
| Discovery magnitude (MPC) |
20.84 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2021-03-20.0000000 |
| e |
0.38862305 |
| q (au) |
2.727781 |
| a (au) |
4.461701 |
| i (deg) |
8.837963 |
| Ω (om, deg) |
246.243776 |
| ω (w, deg) |
152.250537 |
| M (ma, deg) |
254.916863 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.031 + 5.143\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.031 |
| n |
5.143 |
| gf |
1.000 |
| gb |
-0.503 |
| 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) |
| 2026-09-20 00:00 |
11:44:35.02 |
-05:49:49.4 |
HIP 57164 |
29.12 |
| 2026-09-20 12:00 |
11:44:58.13 |
-05:52:13.6 |
HIP 57164 |
34.62 |
| 2026-09-21 00:00 |
11:45:21.22 |
-05:54:37.9 |
HIP 57330 |
35.87 |
| 2026-09-21 12:00 |
11:45:44.31 |
-05:57:02.4 |
HIP 57330 |
34.10 |
| 2026-09-22 00:00 |
11:46:07.38 |
-05:59:27.0 |
HIP 57330 |
33.41 |
| 2026-09-22 12:00 |
11:46:30.45 |
-06:01:51.8 |
HIP 57538 |
30.53 |
| 2026-09-23 00:00 |
11:46:53.50 |
-06:04:16.8 |
HIP 57538 |
25.79 |
| 2026-09-23 12:00 |
11:47:16.55 |
-06:06:41.9 |
HIP 57538 |
21.80 |
| 2026-09-24 00:00 |
11:47:39.58 |
-06:09:07.1 |
HIP 57538 |
19.04 |
| 2026-09-24 12:00 |
11:48:02.60 |
-06:11:32.5 |
HIP 57538 |
18.08 |
| 2026-09-25 00:00 |
11:48:25.60 |
-06:13:58.0 |
HIP 57538 |
19.20 |
| 2026-09-25 12:00 |
11:48:48.59 |
-06:16:23.7 |
HIP 57538 |
22.07 |
| 2026-09-26 00:00 |
11:49:11.57 |
-06:18:49.5 |
HIP 57745 |
20.30 |
| 2026-09-26 12:00 |
11:49:34.53 |
-06:21:15.4 |
HIP 57745 |
16.12 |
| 2026-09-27 00:00 |
11:49:57.48 |
-06:23:41.4 |
HIP 57745 |
13.59 |
| 2026-09-27 12:00 |
11:50:20.41 |
-06:26:07.5 |
HIP 57745 |
13.65 |
| 2026-09-28 00:00 |
11:50:43.33 |
-06:28:33.8 |
HIP 57745 |
16.28 |
| 2026-09-28 12:00 |
11:51:06.23 |
-06:31:00.1 |
HIP 57745 |
20.51 |
| 2026-09-29 00:00 |
11:51:29.11 |
-06:33:26.6 |
HIP 57745 |
25.54 |
| 2026-09-29 12:00 |
11:51:51.98 |
-06:35:53.2 |
HIP 57745 |
31.00 |
| 2026-09-30 00:00 |
11:52:14.83 |
-06:38:19.9 |
HIP 58051 |
33.14 |
| 2026-09-30 12:00 |
11:52:37.66 |
-06:40:46.6 |
HIP 58051 |
27.05 |
| 2026-10-01 00:00 |
11:53:00.47 |
-06:43:13.5 |
HIP 58051 |
21.01 |
| 2026-10-01 12:00 |
11:53:23.26 |
-06:45:40.4 |
HIP 58051 |
15.08 |
| 2026-10-02 00:00 |
11:53:46.04 |
-06:48:07.5 |
HIP 58051 |
9.46 |
| 2026-10-02 12:00 |
11:54:08.79 |
-06:50:34.6 |
HIP 58051 |
5.26 |
| 2026-10-03 00:00 |
11:54:31.52 |
-06:53:01.8 |
HIP 58051 |
6.45 |
| 2026-10-03 12:00 |
11:54:54.23 |
-06:55:29.1 |
HIP 58051 |
11.46 |
| 2026-10-04 00:00 |
11:55:16.92 |
-06:57:56.4 |
HIP 58051 |
17.21 |
| 2026-10-04 12:00 |
11:55:39.58 |
-07:00:23.8 |
HIP 58051 |
23.17 |
| 2026-10-05 00:00 |
11:56:02.22 |
-07:02:51.2 |
HIP 58289 |
18.69 |
| 2026-10-05 12:00 |
11:56:24.84 |
-07:05:18.7 |
HIP 58289 |
14.26 |
| 2026-10-06 00:00 |
11:56:47.44 |
-07:07:46.3 |
HIP 58289 |
11.51 |
| 2026-10-06 12:00 |
11:57:10.00 |
-07:10:13.9 |
HIP 58289 |
11.68 |
| 2026-10-07 00:00 |
11:57:32.55 |
-07:12:41.6 |
HIP 58289 |
14.67 |
| 2026-10-07 12:00 |
11:57:55.06 |
-07:15:09.2 |
HIP 58289 |
19.20 |
| 2026-10-08 00:00 |
11:58:17.55 |
-07:17:37.0 |
HIP 58289 |
24.42 |
| 2026-10-08 12:00 |
11:58:40.01 |
-07:20:04.7 |
HIP 58505 |
26.16 |
| 2026-10-09 00:00 |
11:59:02.45 |
-07:22:32.4 |
HIP 58505 |
20.59 |
| 2026-10-09 12:00 |
11:59:24.85 |
-07:25:00.2 |
HIP 58505 |
15.42 |
| 2026-10-10 00:00 |
11:59:47.22 |
-07:27:28.0 |
HIP 58505 |
11.20 |
| 2026-10-10 12:00 |
12:00:09.57 |
-07:29:55.8 |
HIP 58505 |
9.31 |
| 2026-10-11 00:00 |
12:00:31.88 |
-07:32:23.6 |
HIP 58505 |
11.00 |