| Parameter |
Value |
| Designation |
466P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-05-03T09:52:48.434880Z |
| Orbit solution date (soln_date, UTC) |
2024-05-14T12:42:37Z |
| Obs used |
207 |
| NEO |
- |
| M1 |
11.900 |
| K1 |
17.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-06-26T10:11:45.830400Z |
| Discovery magnitude (MPC) |
19.12 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2021-08-23.0000000 |
| e |
0.46691600 |
| q (au) |
2.155912 |
| a (au) |
4.044226 |
| i (deg) |
12.236217 |
| Ω (om, deg) |
119.886131 |
| ω (w, deg) |
196.588226 |
| M (ma, deg) |
285.057425 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.797 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.797 |
| n |
6.000 |
| gf |
0.975 |
| gb |
-0.739 |
| k |
1.000 |
| δ90 |
9.997 |
| 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 |
07:16:33.69 |
+22:37:53.9 |
HIP 35046 |
37.04 |
| 2026-05-12 12:00 |
07:16:51.41 |
+22:37:46.8 |
HIP 35046 |
39.83 |
| 2026-05-13 00:00 |
07:17:09.23 |
+22:37:39.4 |
HIP 35046 |
42.84 |
| 2026-05-13 12:00 |
07:17:27.16 |
+22:37:31.5 |
HIP 35545 |
38.93 |
| 2026-05-14 00:00 |
07:17:45.18 |
+22:37:23.4 |
HIP 35545 |
34.98 |
| 2026-05-14 12:00 |
07:18:03.31 |
+22:37:14.9 |
HIP 35545 |
31.06 |
| 2026-05-15 00:00 |
07:18:21.53 |
+22:37:06.0 |
HIP 35545 |
27.20 |
| 2026-05-15 12:00 |
07:18:39.86 |
+22:36:56.7 |
HIP 35545 |
23.44 |
| 2026-05-16 00:00 |
07:18:58.28 |
+22:36:47.1 |
HIP 35545 |
19.85 |
| 2026-05-16 12:00 |
07:19:16.80 |
+22:36:37.1 |
HIP 35545 |
16.55 |
| 2026-05-17 00:00 |
07:19:35.41 |
+22:36:26.8 |
HIP 35545 |
13.79 |
| 2026-05-17 12:00 |
07:19:54.12 |
+22:36:16.1 |
HIP 35545 |
11.97 |
| 2026-05-18 00:00 |
07:20:12.92 |
+22:36:05.0 |
HIP 35616 |
10.53 |
| 2026-05-18 12:00 |
07:20:31.81 |
+22:35:53.6 |
HIP 35616 |
6.17 |
| 2026-05-19 00:00 |
07:20:50.79 |
+22:35:41.8 |
HIP 35616 |
1.83 |
| 2026-05-19 12:00 |
07:21:09.87 |
+22:35:29.6 |
HIP 35616 |
2.68 |
| 2026-05-20 00:00 |
07:21:29.03 |
+22:35:17.1 |
HIP 35616 |
7.08 |
| 2026-05-20 12:00 |
07:21:48.29 |
+22:35:04.3 |
HIP 35616 |
11.53 |
| 2026-05-21 00:00 |
07:22:07.63 |
+22:34:51.1 |
HIP 35616 |
15.99 |
| 2026-05-21 12:00 |
07:22:27.05 |
+22:34:37.5 |
HIP 35616 |
20.48 |
| 2026-05-22 00:00 |
07:22:46.57 |
+22:34:23.6 |
HIP 35842 |
24.30 |
| 2026-05-22 12:00 |
07:23:06.16 |
+22:34:09.3 |
HIP 35842 |
23.13 |
| 2026-05-23 00:00 |
07:23:25.84 |
+22:33:54.7 |
HIP 35842 |
22.82 |
| 2026-05-23 12:00 |
07:23:45.60 |
+22:33:39.7 |
HIP 35842 |
23.41 |
| 2026-05-24 00:00 |
07:24:05.45 |
+22:33:24.3 |
HIP 35930 |
22.70 |
| 2026-05-24 12:00 |
07:24:25.37 |
+22:33:08.7 |
HIP 35930 |
22.52 |
| 2026-05-25 00:00 |
07:24:45.37 |
+22:32:52.6 |
HIP 35930 |
23.28 |
| 2026-05-25 12:00 |
07:25:05.46 |
+22:32:36.2 |
HIP 35930 |
24.90 |
| 2026-05-26 00:00 |
07:25:25.61 |
+22:32:19.5 |
HIP 35930 |
27.24 |
| 2026-05-26 12:00 |
07:25:45.85 |
+22:32:02.4 |
HIP 35930 |
30.14 |
| 2026-05-27 00:00 |
07:26:06.16 |
+22:31:45.0 |
HIP 36279 |
29.10 |
| 2026-05-27 12:00 |
07:26:26.55 |
+22:31:27.2 |
HIP 36279 |
24.67 |
| 2026-05-28 00:00 |
07:26:47.01 |
+22:31:09.1 |
HIP 36279 |
20.35 |
| 2026-05-28 12:00 |
07:27:07.55 |
+22:30:50.6 |
HIP 36279 |
16.25 |
| 2026-05-29 00:00 |
07:27:28.16 |
+22:30:31.8 |
HIP 36279 |
12.61 |
| 2026-05-29 12:00 |
07:27:48.84 |
+22:30:12.7 |
HIP 36279 |
9.96 |
| 2026-05-30 00:00 |
07:28:09.59 |
+22:29:53.2 |
HIP 36279 |
9.24 |
| 2026-05-30 12:00 |
07:28:30.41 |
+22:29:33.3 |
HIP 36279 |
10.86 |
| 2026-05-31 00:00 |
07:28:51.30 |
+22:29:13.1 |
HIP 36279 |
14.05 |
| 2026-05-31 12:00 |
07:29:12.26 |
+22:28:52.6 |
HIP 36279 |
18.01 |
| 2026-06-01 00:00 |
07:29:33.29 |
+22:28:31.7 |
HIP 36386 |
19.11 |
| 2026-06-01 12:00 |
07:29:54.38 |
+22:28:10.5 |
HIP 36386 |
20.89 |
| 2026-06-02 00:00 |
07:30:15.54 |
+22:27:49.0 |
HIP 36573 |
18.52 |