C/2024 L3 (PANSTARRS)
| Parameter |
Value |
| Designation |
C/2024 L3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-11-24T09:49:27.088320Z |
| Orbit solution date (soln_date, UTC) |
2025-01-14T17:42:13Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-06-07T11:28:43.910400Z |
| Discovery magnitude (MPC) |
22.49 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-06-04.0000000 |
| e |
1.00558885 |
| q (au) |
6.858505 |
| a (au) |
-1227.177282 |
| i (deg) |
111.592112 |
| Ω (om, deg) |
294.984392 |
| ω (w, deg) |
59.083315 |
| M (ma, deg) |
0.004415 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.969 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.969 |
| n |
2.000 |
| gf |
0.988 |
| gb |
-0.967 |
| k |
1.000 |
| δ90 |
9.994 |
| 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 |
14:04:01.05 |
+61:27:33.3 |
HIP 68690 |
9.22 |
| 2026-02-03 12:00 |
14:03:42.55 |
+61:31:28.4 |
HIP 68690 |
4.91 |
| 2026-02-04 00:00 |
14:03:23.72 |
+61:35:23.2 |
HIP 68690 |
1.90 |
| 2026-02-04 12:00 |
14:03:04.57 |
+61:39:17.7 |
HIP 68615 |
2.54 |
| 2026-02-05 00:00 |
14:02:45.09 |
+61:43:11.7 |
HIP 68615 |
2.46 |
| 2026-02-05 12:00 |
14:02:25.28 |
+61:47:05.4 |
HIP 68615 |
6.85 |
| 2026-02-06 00:00 |
14:02:05.13 |
+61:50:58.7 |
HIP 68615 |
11.37 |
| 2026-02-06 12:00 |
14:01:44.66 |
+61:54:51.5 |
HIP 68615 |
15.92 |
| 2026-02-07 00:00 |
14:01:23.85 |
+61:58:43.9 |
HIP 68623 |
20.20 |
| 2026-02-07 12:00 |
14:01:02.70 |
+62:02:35.7 |
HIP 68623 |
18.55 |
| 2026-02-08 00:00 |
14:00:41.22 |
+62:06:27.0 |
HIP 68623 |
17.97 |
| 2026-02-08 12:00 |
14:00:19.40 |
+62:10:17.8 |
HIP 68623 |
18.59 |
| 2026-02-09 00:00 |
13:59:57.24 |
+62:14:08.0 |
HIP 68623 |
20.29 |
| 2026-02-09 12:00 |
13:59:34.75 |
+62:17:57.5 |
HIP 68287 |
17.56 |
| 2026-02-10 00:00 |
13:59:11.91 |
+62:21:46.4 |
HIP 68287 |
13.14 |
| 2026-02-10 12:00 |
13:58:48.73 |
+62:25:34.7 |
HIP 68287 |
8.96 |
| 2026-02-11 00:00 |
13:58:25.22 |
+62:29:22.2 |
HIP 68287 |
5.61 |
| 2026-02-11 12:00 |
13:58:01.35 |
+62:33:09.0 |
HIP 68287 |
5.14 |
| 2026-02-12 00:00 |
13:57:37.15 |
+62:36:55.0 |
HIP 68287 |
8.09 |
| 2026-02-12 12:00 |
13:57:12.60 |
+62:40:40.3 |
HIP 68142 |
6.93 |
| 2026-02-13 00:00 |
13:56:47.71 |
+62:44:24.7 |
HIP 68142 |
3.63 |
| 2026-02-13 12:00 |
13:56:22.47 |
+62:48:08.3 |
HIP 68142 |
4.78 |
| 2026-02-14 00:00 |
13:55:56.89 |
+62:51:51.0 |
HIP 68142 |
8.79 |
| 2026-02-14 12:00 |
13:55:30.96 |
+62:55:32.8 |
HIP 68142 |
13.29 |
| 2026-02-15 00:00 |
13:55:04.69 |
+62:59:13.7 |
HIP 68022 |
10.80 |
| 2026-02-15 12:00 |
13:54:38.07 |
+63:02:53.6 |
HIP 68022 |
9.77 |
| 2026-02-16 00:00 |
13:54:11.10 |
+63:06:32.5 |
HIP 68022 |
10.96 |
| 2026-02-16 12:00 |
13:53:43.79 |
+63:10:10.4 |
HIP 68022 |
13.81 |
| 2026-02-17 00:00 |
13:53:16.13 |
+63:13:47.3 |
HIP 68022 |
17.53 |
| 2026-02-17 12:00 |
13:52:48.13 |
+63:17:23.0 |
HIP 68022 |
21.69 |
| 2026-02-18 00:00 |
13:52:19.78 |
+63:20:57.6 |
HIP 68022 |
26.08 |
| 2026-02-18 12:00 |
13:51:51.08 |
+63:24:31.1 |
HIP 68022 |
30.60 |
| 2026-02-19 00:00 |
13:51:22.05 |
+63:28:03.5 |
HIP 67872 |
30.44 |
| 2026-02-19 12:00 |
13:50:52.66 |
+63:31:34.6 |
HIP 67238 |
27.79 |
| 2026-02-20 00:00 |
13:50:22.94 |
+63:35:04.4 |
HIP 67238 |
24.66 |
| 2026-02-20 12:00 |
13:49:52.87 |
+63:38:33.1 |
HIP 67238 |
22.12 |
| 2026-02-21 00:00 |
13:49:22.46 |
+63:42:00.4 |
HIP 67238 |
20.39 |
| 2026-02-21 12:00 |
13:48:51.71 |
+63:45:26.4 |
HIP 67238 |
19.69 |
| 2026-02-22 00:00 |
13:48:20.62 |
+63:48:51.0 |
HIP 67238 |
20.14 |
| 2026-02-22 12:00 |
13:47:49.19 |
+63:52:14.3 |
HIP 67238 |
21.66 |
| 2026-02-23 00:00 |
13:47:17.42 |
+63:55:36.2 |
HIP 67045 |
22.78 |
| 2026-02-23 12:00 |
13:46:45.32 |
+63:58:56.6 |
HIP 67045 |
22.15 |
| 2026-02-24 00:00 |
13:46:12.88 |
+64:02:15.6 |
HIP 67045 |
22.55 |