466P/PANSTARRS
| 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) |
| 2026-02-03 00:00 |
07:09:42.85 |
+21:01:28.6 |
HIP 34608 |
14.53 |
| 2026-02-03 12:00 |
07:09:27.05 |
+21:02:34.8 |
HIP 34608 |
15.41 |
| 2026-02-04 00:00 |
07:09:11.40 |
+21:03:40.7 |
HIP 34433 |
16.87 |
| 2026-02-04 12:00 |
07:08:55.88 |
+21:04:46.2 |
HIP 34433 |
15.39 |
| 2026-02-05 00:00 |
07:08:40.52 |
+21:05:51.4 |
HIP 34433 |
14.75 |
| 2026-02-05 12:00 |
07:08:25.30 |
+21:06:56.2 |
HIP 34433 |
15.05 |
| 2026-02-06 00:00 |
07:08:10.23 |
+21:08:00.8 |
HIP 34433 |
16.21 |
| 2026-02-06 12:00 |
07:07:55.31 |
+21:09:04.9 |
HIP 34433 |
18.04 |
| 2026-02-07 00:00 |
07:07:40.55 |
+21:10:08.8 |
HIP 34433 |
20.34 |
| 2026-02-07 12:00 |
07:07:25.94 |
+21:11:12.3 |
HIP 34433 |
22.95 |
| 2026-02-08 00:00 |
07:07:11.49 |
+21:12:15.4 |
HIP 34218 |
24.51 |
| 2026-02-08 12:00 |
07:06:57.20 |
+21:13:18.2 |
HIP 34218 |
22.32 |
| 2026-02-09 00:00 |
07:06:43.07 |
+21:14:20.6 |
HIP 34218 |
20.53 |
| 2026-02-09 12:00 |
07:06:29.10 |
+21:15:22.7 |
HIP 34218 |
19.22 |
| 2026-02-10 00:00 |
07:06:15.30 |
+21:16:24.5 |
HIP 34218 |
18.46 |
| 2026-02-10 12:00 |
07:06:01.67 |
+21:17:25.8 |
HIP 34218 |
18.32 |
| 2026-02-11 00:00 |
07:05:48.20 |
+21:18:26.8 |
HIP 34218 |
18.77 |
| 2026-02-11 12:00 |
07:05:34.91 |
+21:19:27.5 |
HIP 34218 |
19.76 |
| 2026-02-12 00:00 |
07:05:21.78 |
+21:20:27.7 |
HIP 34218 |
21.20 |
| 2026-02-12 12:00 |
07:05:08.84 |
+21:21:27.7 |
HIP 34218 |
22.98 |
| 2026-02-13 00:00 |
07:04:56.06 |
+21:22:27.2 |
HIP 34218 |
25.01 |
| 2026-02-13 12:00 |
07:04:43.47 |
+21:23:26.4 |
HIP 33992 |
25.21 |
| 2026-02-14 00:00 |
07:04:31.05 |
+21:24:25.1 |
HIP 33992 |
23.35 |
| 2026-02-14 12:00 |
07:04:18.81 |
+21:25:23.6 |
HIP 33992 |
21.78 |
| 2026-02-15 00:00 |
07:04:06.76 |
+21:26:21.6 |
HIP 33992 |
20.56 |
| 2026-02-15 12:00 |
07:03:54.89 |
+21:27:19.3 |
HIP 33992 |
19.74 |
| 2026-02-16 00:00 |
07:03:43.20 |
+21:28:16.5 |
HIP 33992 |
19.34 |
| 2026-02-16 12:00 |
07:03:31.70 |
+21:29:13.4 |
HIP 33992 |
19.37 |
| 2026-02-17 00:00 |
07:03:20.39 |
+21:30:09.9 |
HIP 33992 |
19.81 |
| 2026-02-17 12:00 |
07:03:09.27 |
+21:31:06.1 |
HIP 33992 |
20.61 |
| 2026-02-18 00:00 |
07:02:58.33 |
+21:32:01.8 |
HIP 33890 |
20.05 |
| 2026-02-18 12:00 |
07:02:47.59 |
+21:32:57.2 |
HIP 33890 |
17.85 |
| 2026-02-19 00:00 |
07:02:37.04 |
+21:33:52.1 |
HIP 33890 |
15.81 |
| 2026-02-19 12:00 |
07:02:26.68 |
+21:34:46.7 |
HIP 33890 |
14.00 |
| 2026-02-20 00:00 |
07:02:16.52 |
+21:35:40.9 |
HIP 33890 |
12.47 |
| 2026-02-20 12:00 |
07:02:06.55 |
+21:36:34.7 |
HIP 33890 |
11.31 |
| 2026-02-21 00:00 |
07:01:56.78 |
+21:37:28.1 |
HIP 33890 |
10.61 |
| 2026-02-21 12:00 |
07:01:47.21 |
+21:38:21.1 |
HIP 33890 |
10.44 |
| 2026-02-22 00:00 |
07:01:37.84 |
+21:39:13.7 |
HIP 33890 |
10.78 |
| 2026-02-22 12:00 |
07:01:28.66 |
+21:40:05.9 |
HIP 33890 |
11.57 |
| 2026-02-23 00:00 |
07:01:19.69 |
+21:40:57.7 |
HIP 33890 |
12.70 |
| 2026-02-23 12:00 |
07:01:10.91 |
+21:41:49.1 |
HIP 33890 |
14.06 |
| 2026-02-24 00:00 |
07:01:02.34 |
+21:42:40.1 |
HIP 33890 |
15.57 |