| 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
$$
M_a = (11.605 + 5.535\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.605 |
| n |
5.535 |
| 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) |
| 2026-05-12 00:00 |
10:29:03.94 |
-00:31:20.7 |
HIP 51437 |
19.63 |
| 2026-05-12 12:00 |
10:29:07.30 |
-00:30:37.9 |
HIP 51437 |
19.12 |
| 2026-05-13 00:00 |
10:29:10.83 |
-00:29:56.2 |
HIP 51437 |
18.61 |
| 2026-05-13 12:00 |
10:29:14.53 |
-00:29:15.6 |
HIP 51437 |
18.11 |
| 2026-05-14 00:00 |
10:29:18.42 |
-00:28:36.1 |
HIP 51428 |
17.26 |
| 2026-05-14 12:00 |
10:29:22.48 |
-00:27:57.8 |
HIP 51428 |
16.07 |
| 2026-05-15 00:00 |
10:29:26.71 |
-00:27:20.6 |
HIP 51428 |
14.86 |
| 2026-05-15 12:00 |
10:29:31.11 |
-00:26:44.5 |
HIP 51428 |
13.64 |
| 2026-05-16 00:00 |
10:29:35.69 |
-00:26:09.6 |
HIP 51428 |
12.40 |
| 2026-05-16 12:00 |
10:29:40.44 |
-00:25:35.8 |
HIP 51428 |
11.16 |
| 2026-05-17 00:00 |
10:29:45.37 |
-00:25:03.1 |
HIP 51428 |
9.92 |
| 2026-05-17 12:00 |
10:29:50.46 |
-00:24:31.5 |
HIP 51428 |
8.71 |
| 2026-05-18 00:00 |
10:29:55.73 |
-00:24:01.1 |
HIP 51428 |
7.54 |
| 2026-05-18 12:00 |
10:30:01.16 |
-00:23:31.8 |
HIP 51428 |
6.48 |
| 2026-05-19 00:00 |
10:30:06.76 |
-00:23:03.7 |
HIP 51428 |
5.59 |
| 2026-05-19 12:00 |
10:30:12.54 |
-00:22:36.7 |
HIP 51428 |
5.01 |
| 2026-05-20 00:00 |
10:30:18.47 |
-00:22:10.8 |
HIP 51428 |
4.89 |
| 2026-05-20 12:00 |
10:30:24.58 |
-00:21:46.0 |
HIP 51428 |
5.28 |
| 2026-05-21 00:00 |
10:30:30.85 |
-00:21:22.4 |
HIP 51428 |
6.11 |
| 2026-05-21 12:00 |
10:30:37.28 |
-00:21:00.0 |
HIP 51428 |
7.26 |
| 2026-05-22 00:00 |
10:30:43.88 |
-00:20:38.6 |
HIP 51428 |
8.62 |
| 2026-05-22 12:00 |
10:30:50.64 |
-00:20:18.3 |
HIP 51428 |
10.13 |
| 2026-05-23 00:00 |
10:30:57.56 |
-00:19:59.2 |
HIP 51428 |
11.73 |
| 2026-05-23 12:00 |
10:31:04.65 |
-00:19:41.2 |
HIP 51428 |
13.42 |
| 2026-05-24 00:00 |
10:31:11.89 |
-00:19:24.3 |
HIP 51428 |
15.18 |
| 2026-05-24 12:00 |
10:31:19.29 |
-00:19:08.5 |
HIP 51428 |
16.99 |
| 2026-05-25 00:00 |
10:31:26.85 |
-00:18:53.9 |
HIP 51428 |
18.86 |
| 2026-05-25 12:00 |
10:31:34.57 |
-00:18:40.3 |
HIP 51428 |
20.77 |
| 2026-05-26 00:00 |
10:31:42.44 |
-00:18:27.9 |
HIP 51428 |
22.72 |
| 2026-05-26 12:00 |
10:31:50.46 |
-00:18:16.6 |
HIP 51428 |
24.72 |
| 2026-05-27 00:00 |
10:31:58.65 |
-00:18:06.4 |
HIP 51428 |
26.76 |
| 2026-05-27 12:00 |
10:32:06.98 |
-00:17:57.2 |
HIP 51428 |
28.85 |
| 2026-05-28 00:00 |
10:32:15.47 |
-00:17:49.2 |
HIP 51428 |
30.97 |
| 2026-05-28 12:00 |
10:32:24.10 |
-00:17:42.3 |
HIP 51428 |
33.12 |
| 2026-05-29 00:00 |
10:32:32.89 |
-00:17:36.4 |
HIP 51619 |
34.49 |
| 2026-05-29 12:00 |
10:32:41.83 |
-00:17:31.7 |
HIP 51791 |
33.69 |
| 2026-05-30 00:00 |
10:32:50.91 |
-00:17:28.0 |
HIP 51791 |
31.43 |
| 2026-05-30 12:00 |
10:33:00.15 |
-00:17:25.5 |
HIP 51791 |
29.14 |
| 2026-05-31 00:00 |
10:33:09.53 |
-00:17:24.0 |
HIP 51791 |
26.81 |
| 2026-05-31 12:00 |
10:33:19.06 |
-00:17:23.6 |
HIP 51791 |
24.45 |
| 2026-06-01 00:00 |
10:33:28.73 |
-00:17:24.2 |
HIP 51791 |
22.06 |
| 2026-06-01 12:00 |
10:33:38.54 |
-00:17:26.0 |
HIP 51791 |
19.63 |
| 2026-06-02 00:00 |
10:33:48.50 |
-00:17:28.8 |
HIP 51791 |
17.16 |