C/2024 L2 (PANSTARRS)
| Parameter |
Value |
| Designation |
C/2024 L2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-06-18T07:08:48.744960Z |
| Orbit solution date (soln_date, UTC) |
2025-01-14T17:42:13Z |
| Obs used |
30 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
9.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-06-13T12:42:08.496000Z |
| Discovery magnitude (MPC) |
20.48 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-05-31.0000000 |
| e |
1.00417278 |
| q (au) |
8.325893 |
| a (au) |
-1995.285740 |
| i (deg) |
139.583969 |
| Ω (om, deg) |
266.182400 |
| ω (w, deg) |
345.937928 |
| M (ma, deg) |
-0.004239 |
Magnitude
Scatter + Global Linear
$$
M_a = (0.284 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
0.284 |
| n |
6.000 |
| gf |
0.997 |
| 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) |
| 2026-02-03 00:00 |
18:05:52.43 |
-23:56:09.0 |
HIP 88705 |
9.48 |
| 2026-02-03 12:00 |
18:05:57.76 |
-23:55:08.5 |
HIP 88705 |
8.40 |
| 2026-02-04 00:00 |
18:06:03.00 |
-23:54:08.0 |
HIP 88705 |
7.51 |
| 2026-02-04 12:00 |
18:06:08.16 |
-23:53:07.4 |
HIP 88705 |
6.89 |
| 2026-02-05 00:00 |
18:06:13.24 |
-23:52:06.7 |
HIP 88705 |
6.59 |
| 2026-02-05 12:00 |
18:06:18.24 |
-23:51:06.0 |
HIP 88705 |
6.66 |
| 2026-02-06 00:00 |
18:06:23.16 |
-23:50:05.2 |
HIP 88705 |
7.07 |
| 2026-02-06 12:00 |
18:06:27.99 |
-23:49:04.3 |
HIP 88705 |
7.77 |
| 2026-02-07 00:00 |
18:06:32.74 |
-23:48:03.4 |
HIP 88705 |
8.67 |
| 2026-02-07 12:00 |
18:06:37.40 |
-23:47:02.4 |
HIP 88705 |
9.71 |
| 2026-02-08 00:00 |
18:06:41.98 |
-23:46:01.3 |
HIP 88705 |
10.86 |
| 2026-02-08 12:00 |
18:06:46.47 |
-23:45:00.1 |
HIP 88705 |
12.07 |
| 2026-02-09 00:00 |
18:06:50.87 |
-23:43:58.9 |
HIP 88705 |
13.32 |
| 2026-02-09 12:00 |
18:06:55.18 |
-23:42:57.6 |
HIP 88705 |
14.60 |
| 2026-02-10 00:00 |
18:06:59.41 |
-23:41:56.3 |
HIP 88705 |
15.89 |
| 2026-02-10 12:00 |
18:07:03.54 |
-23:40:54.9 |
HIP 88705 |
17.20 |
| 2026-02-11 00:00 |
18:07:07.59 |
-23:39:53.4 |
HIP 88705 |
18.51 |
| 2026-02-11 12:00 |
18:07:11.54 |
-23:38:51.8 |
HIP 88786 |
19.32 |
| 2026-02-12 00:00 |
18:07:15.40 |
-23:37:50.1 |
HIP 88786 |
18.15 |
| 2026-02-12 12:00 |
18:07:19.16 |
-23:36:48.4 |
HIP 88786 |
17.01 |
| 2026-02-13 00:00 |
18:07:22.83 |
-23:35:46.6 |
HIP 88786 |
15.90 |
| 2026-02-13 12:00 |
18:07:26.41 |
-23:34:44.7 |
HIP 88786 |
14.83 |
| 2026-02-14 00:00 |
18:07:29.89 |
-23:33:42.8 |
HIP 88786 |
13.80 |
| 2026-02-14 12:00 |
18:07:33.27 |
-23:32:40.7 |
HIP 88786 |
12.81 |
| 2026-02-15 00:00 |
18:07:36.55 |
-23:31:38.6 |
HIP 88786 |
11.88 |
| 2026-02-15 12:00 |
18:07:39.74 |
-23:30:36.5 |
HIP 88786 |
11.02 |
| 2026-02-16 00:00 |
18:07:42.83 |
-23:29:34.2 |
HIP 88786 |
10.23 |
| 2026-02-16 12:00 |
18:07:45.81 |
-23:28:31.8 |
HIP 88786 |
9.52 |
| 2026-02-17 00:00 |
18:07:48.70 |
-23:27:29.4 |
HIP 88786 |
8.93 |
| 2026-02-17 12:00 |
18:07:51.48 |
-23:26:26.9 |
HIP 88786 |
8.45 |
| 2026-02-18 00:00 |
18:07:54.16 |
-23:25:24.3 |
HIP 88786 |
8.12 |
| 2026-02-18 12:00 |
18:07:56.74 |
-23:24:21.7 |
HIP 88786 |
7.94 |
| 2026-02-19 00:00 |
18:07:59.21 |
-23:23:18.9 |
HIP 88786 |
7.91 |
| 2026-02-19 12:00 |
18:08:01.58 |
-23:22:16.1 |
HIP 88786 |
8.04 |
| 2026-02-20 00:00 |
18:08:03.84 |
-23:21:13.2 |
HIP 88786 |
8.31 |
| 2026-02-20 12:00 |
18:08:05.99 |
-23:20:10.2 |
HIP 88786 |
8.71 |
| 2026-02-21 00:00 |
18:08:08.04 |
-23:19:07.1 |
HIP 88786 |
9.21 |
| 2026-02-21 12:00 |
18:08:09.98 |
-23:18:03.9 |
HIP 88786 |
9.80 |
| 2026-02-22 00:00 |
18:08:11.81 |
-23:17:00.7 |
HIP 88786 |
10.46 |
| 2026-02-22 12:00 |
18:08:13.53 |
-23:15:57.4 |
HIP 88786 |
11.17 |
| 2026-02-23 00:00 |
18:08:15.14 |
-23:14:53.9 |
HIP 88786 |
11.92 |
| 2026-02-23 12:00 |
18:08:16.64 |
-23:13:50.4 |
HIP 88786 |
12.70 |
| 2026-02-24 00:00 |
18:08:18.03 |
-23:12:46.8 |
HIP 88786 |
13.51 |