| 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) |
| 2026-03-26 00:00 |
18:05:54.92 |
-22:06:03.4 |
HIP 88721 |
24.82 |
| 2026-03-26 12:00 |
18:05:48.42 |
-22:04:53.1 |
HIP 88595 |
25.23 |
| 2026-03-27 00:00 |
18:05:41.78 |
-22:03:42.6 |
HIP 88595 |
23.75 |
| 2026-03-27 12:00 |
18:05:35.00 |
-22:02:32.0 |
HIP 88595 |
22.34 |
| 2026-03-28 00:00 |
18:05:28.08 |
-22:01:21.3 |
HIP 88595 |
21.02 |
| 2026-03-28 12:00 |
18:05:21.01 |
-22:00:10.4 |
HIP 88595 |
19.81 |
| 2026-03-29 00:00 |
18:05:13.80 |
-21:58:59.4 |
HIP 88595 |
18.73 |
| 2026-03-29 12:00 |
18:05:06.44 |
-21:57:48.2 |
HIP 88595 |
17.84 |
| 2026-03-30 00:00 |
18:04:58.95 |
-21:56:36.9 |
HIP 88595 |
17.16 |
| 2026-03-30 12:00 |
18:04:51.31 |
-21:55:25.5 |
HIP 88595 |
16.73 |
| 2026-03-31 00:00 |
18:04:43.52 |
-21:54:13.9 |
HIP 88595 |
16.58 |
| 2026-03-31 12:00 |
18:04:35.59 |
-21:53:02.1 |
HIP 88595 |
16.74 |
| 2026-04-01 00:00 |
18:04:27.52 |
-21:51:50.3 |
HIP 88595 |
17.20 |
| 2026-04-01 12:00 |
18:04:19.31 |
-21:50:38.2 |
HIP 88595 |
17.96 |
| 2026-04-02 00:00 |
18:04:10.95 |
-21:49:26.1 |
HIP 88595 |
18.98 |
| 2026-04-02 12:00 |
18:04:02.45 |
-21:48:13.7 |
HIP 88595 |
20.24 |
| 2026-04-03 00:00 |
18:03:53.80 |
-21:47:01.3 |
HIP 88595 |
21.71 |
| 2026-04-03 12:00 |
18:03:45.01 |
-21:45:48.7 |
HIP 88325 |
22.68 |
| 2026-04-04 00:00 |
18:03:36.07 |
-21:44:35.9 |
HIP 88325 |
21.67 |
| 2026-04-04 12:00 |
18:03:26.99 |
-21:43:23.0 |
HIP 88325 |
20.86 |
| 2026-04-05 00:00 |
18:03:17.77 |
-21:42:09.9 |
HIP 88325 |
20.29 |
| 2026-04-05 12:00 |
18:03:08.40 |
-21:40:56.7 |
HIP 88325 |
19.99 |
| 2026-04-06 00:00 |
18:02:58.88 |
-21:39:43.3 |
HIP 88325 |
19.99 |
| 2026-04-06 12:00 |
18:02:49.23 |
-21:38:29.7 |
HIP 88325 |
20.30 |
| 2026-04-07 00:00 |
18:02:39.42 |
-21:37:16.0 |
HIP 88325 |
20.92 |
| 2026-04-07 12:00 |
18:02:29.48 |
-21:36:02.2 |
HIP 88325 |
21.82 |
| 2026-04-08 00:00 |
18:02:19.39 |
-21:34:48.2 |
HIP 88325 |
22.99 |
| 2026-04-08 12:00 |
18:02:09.15 |
-21:33:34.0 |
HIP 88325 |
24.40 |
| 2026-04-09 00:00 |
18:01:58.77 |
-21:32:19.7 |
HIP 88325 |
26.02 |
| 2026-04-09 12:00 |
18:01:48.25 |
-21:31:05.2 |
HIP 88325 |
27.83 |
| 2026-04-10 00:00 |
18:01:37.58 |
-21:29:50.5 |
HIP 88325 |
29.79 |
| 2026-04-10 12:00 |
18:01:26.76 |
-21:28:35.7 |
HIP 88219 |
30.09 |
| 2026-04-11 00:00 |
18:01:15.81 |
-21:27:20.7 |
HIP 88219 |
28.38 |
| 2026-04-11 12:00 |
18:01:04.71 |
-21:26:05.5 |
HIP 88219 |
26.86 |
| 2026-04-12 00:00 |
18:00:53.46 |
-21:24:50.2 |
HIP 88219 |
25.57 |
| 2026-04-12 12:00 |
18:00:42.07 |
-21:23:34.8 |
HIP 88219 |
24.56 |
| 2026-04-13 00:00 |
18:00:30.54 |
-21:22:19.1 |
HIP 88219 |
23.88 |
| 2026-04-13 12:00 |
18:00:18.87 |
-21:21:03.3 |
HIP 88095 |
21.36 |
| 2026-04-14 00:00 |
18:00:07.05 |
-21:19:47.3 |
HIP 88095 |
18.94 |
| 2026-04-14 12:00 |
17:59:55.09 |
-21:18:31.2 |
HIP 88095 |
16.70 |
| 2026-04-15 00:00 |
17:59:42.98 |
-21:17:14.9 |
HIP 88095 |
14.75 |
| 2026-04-15 12:00 |
17:59:30.74 |
-21:15:58.4 |
HIP 88095 |
13.24 |
| 2026-04-16 00:00 |
17:59:18.35 |
-21:14:41.7 |
HIP 88095 |
12.36 |