| 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 · University of Arizona 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 |
0.982 |
| gb |
-0.739 |
| 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) |
| 2026-07-29 00:00 |
08:14:36.74 |
+21:14:56.6 |
HIP 40404 |
11.03 |
| 2026-07-29 12:00 |
08:15:00.72 |
+21:14:05.6 |
HIP 40404 |
9.36 |
| 2026-07-30 00:00 |
08:15:24.68 |
+21:13:14.5 |
HIP 40404 |
10.84 |
| 2026-07-30 12:00 |
08:15:48.64 |
+21:12:23.2 |
HIP 40544 |
13.33 |
| 2026-07-31 00:00 |
08:16:12.57 |
+21:11:31.8 |
HIP 40544 |
8.02 |
| 2026-07-31 12:00 |
08:16:36.49 |
+21:10:40.3 |
HIP 40544 |
3.82 |
| 2026-08-01 00:00 |
08:17:00.40 |
+21:09:48.7 |
HIP 40544 |
5.34 |
| 2026-08-01 12:00 |
08:17:24.28 |
+21:08:56.9 |
HIP 40650 |
6.77 |
| 2026-08-02 00:00 |
08:17:48.15 |
+21:08:05.1 |
HIP 40650 |
2.75 |
| 2026-08-02 12:00 |
08:18:12.01 |
+21:07:13.1 |
HIP 40650 |
5.73 |
| 2026-08-03 00:00 |
08:18:35.84 |
+21:06:21.0 |
HIP 40650 |
11.01 |
| 2026-08-03 12:00 |
08:18:59.66 |
+21:05:28.9 |
HIP 40781 |
11.46 |
| 2026-08-04 00:00 |
08:19:23.45 |
+21:04:36.6 |
HIP 40807 |
10.63 |
| 2026-08-04 12:00 |
08:19:47.23 |
+21:03:44.3 |
HIP 40807 |
8.69 |
| 2026-08-05 00:00 |
08:20:10.99 |
+21:02:51.8 |
HIP 40807 |
10.06 |
| 2026-08-05 12:00 |
08:20:34.72 |
+21:01:59.3 |
HIP 40807 |
13.77 |
| 2026-08-06 00:00 |
08:20:58.43 |
+21:01:06.6 |
HIP 40866 |
18.45 |
| 2026-08-06 12:00 |
08:21:22.12 |
+21:00:13.9 |
HIP 40866 |
20.98 |
| 2026-08-07 00:00 |
08:21:45.79 |
+20:59:21.2 |
HIP 40866 |
24.55 |
| 2026-08-07 12:00 |
08:22:09.44 |
+20:58:28.3 |
HIP 41083 |
26.68 |
| 2026-08-08 00:00 |
08:22:33.06 |
+20:57:35.4 |
HIP 41083 |
24.06 |
| 2026-08-08 12:00 |
08:22:56.65 |
+20:56:42.4 |
HIP 41083 |
22.54 |
| 2026-08-09 00:00 |
08:23:20.22 |
+20:55:49.3 |
HIP 41083 |
22.35 |
| 2026-08-09 12:00 |
08:23:43.76 |
+20:54:56.2 |
HIP 41083 |
23.52 |
| 2026-08-10 00:00 |
08:24:07.28 |
+20:54:03.0 |
HIP 41083 |
25.86 |
| 2026-08-10 12:00 |
08:24:30.77 |
+20:53:09.8 |
HIP 41311 |
25.05 |
| 2026-08-11 00:00 |
08:24:54.23 |
+20:52:16.5 |
HIP 41311 |
22.43 |
| 2026-08-11 12:00 |
08:25:17.66 |
+20:51:23.2 |
HIP 41311 |
20.98 |
| 2026-08-12 00:00 |
08:25:41.05 |
+20:50:29.8 |
HIP 41311 |
20.95 |
| 2026-08-12 12:00 |
08:26:04.42 |
+20:49:36.5 |
HIP 41311 |
22.33 |
| 2026-08-13 00:00 |
08:26:27.76 |
+20:48:43.0 |
HIP 41311 |
24.89 |
| 2026-08-13 12:00 |
08:26:51.07 |
+20:47:49.6 |
HIP 41524 |
27.58 |
| 2026-08-14 00:00 |
08:27:14.34 |
+20:46:56.1 |
HIP 41524 |
25.21 |
| 2026-08-14 12:00 |
08:27:37.58 |
+20:46:02.6 |
HIP 41524 |
23.90 |
| 2026-08-15 00:00 |
08:28:00.78 |
+20:45:09.1 |
HIP 41524 |
23.82 |
| 2026-08-15 12:00 |
08:28:23.95 |
+20:44:15.6 |
HIP 41638 |
23.69 |
| 2026-08-16 00:00 |
08:28:47.08 |
+20:43:22.1 |
HIP 41638 |
19.95 |
| 2026-08-16 12:00 |
08:29:10.17 |
+20:42:28.6 |
HIP 41638 |
17.17 |
| 2026-08-17 00:00 |
08:29:33.23 |
+20:41:35.0 |
HIP 41710 |
14.79 |
| 2026-08-17 12:00 |
08:29:56.25 |
+20:40:41.5 |
HIP 41710 |
12.16 |
| 2026-08-18 00:00 |
08:30:19.24 |
+20:39:48.0 |
HIP 41710 |
11.67 |
| 2026-08-18 12:00 |
08:30:42.18 |
+20:38:54.5 |
HIP 41710 |
13.56 |
| 2026-08-19 00:00 |
08:31:05.08 |
+20:38:01.1 |
HIP 41710 |
17.04 |