| Parameter |
Value |
| Designation |
C/2025 L2 (MAPS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-12-20T15:54:43.277760Z |
| Orbit solution date (soln_date, UTC) |
2026-09-08T09:12:17Z |
| Obs used |
382 |
| NEO |
- |
| M1 |
10.600 |
| K1 |
11.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-06-02T07:22:26.400000Z |
| Discovery magnitude (MPC) |
18.70 G |
| Discovery observatory (MPC) |
W94 · MAPS, San Pedro de Atacama |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2025-09-02.0000000 |
| e |
0.99440166 |
| q (au) |
2.833647 |
| a (au) |
506.158359 |
| i (deg) |
86.582771 |
| Ω (om, deg) |
134.985031 |
| ω (w, deg) |
232.643007 |
| M (ma, deg) |
359.990509 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.125 + 5.105\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.125 |
| n |
5.105 |
| gf |
1.000 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
08:33:42.31 |
-38:11:55.4 |
HIP 41932 |
9.52 |
| 2026-09-25 12:00 |
08:34:03.79 |
-38:13:31.0 |
HIP 41970 |
12.26 |
| 2026-09-26 00:00 |
08:34:25.04 |
-38:15:07.6 |
HIP 41970 |
14.63 |
| 2026-09-26 12:00 |
08:34:46.06 |
-38:16:45.1 |
HIP 41970 |
17.77 |
| 2026-09-27 00:00 |
08:35:06.86 |
-38:18:23.5 |
HIP 42215 |
17.42 |
| 2026-09-27 12:00 |
08:35:27.42 |
-38:20:02.9 |
HIP 42215 |
13.13 |
| 2026-09-28 00:00 |
08:35:47.75 |
-38:21:43.1 |
HIP 42215 |
8.92 |
| 2026-09-28 12:00 |
08:36:07.85 |
-38:23:24.2 |
HIP 42215 |
4.94 |
| 2026-09-29 00:00 |
08:36:27.72 |
-38:25:06.1 |
HIP 42215 |
2.40 |
| 2026-09-29 12:00 |
08:36:47.36 |
-38:26:49.0 |
HIP 42215 |
4.77 |
| 2026-09-30 00:00 |
08:37:06.76 |
-38:28:32.6 |
HIP 42215 |
8.62 |
| 2026-09-30 12:00 |
08:37:25.93 |
-38:30:17.1 |
HIP 42215 |
12.63 |
| 2026-10-01 00:00 |
08:37:44.86 |
-38:32:02.5 |
HIP 42349 |
13.98 |
| 2026-10-01 12:00 |
08:38:03.56 |
-38:33:48.6 |
HIP 42349 |
11.78 |
| 2026-10-02 00:00 |
08:38:22.01 |
-38:35:35.5 |
HIP 42349 |
10.69 |
| 2026-10-02 12:00 |
08:38:40.24 |
-38:37:23.3 |
HIP 42349 |
11.01 |
| 2026-10-03 00:00 |
08:38:58.22 |
-38:39:11.8 |
HIP 42349 |
12.60 |
| 2026-10-03 12:00 |
08:39:15.96 |
-38:41:01.0 |
HIP 42349 |
15.02 |
| 2026-10-04 00:00 |
08:39:33.46 |
-38:42:51.0 |
HIP 42349 |
17.93 |
| 2026-10-04 12:00 |
08:39:50.72 |
-38:44:41.8 |
HIP 42349 |
21.10 |
| 2026-10-05 00:00 |
08:40:07.73 |
-38:46:33.2 |
HIP 42349 |
24.41 |
| 2026-10-05 12:00 |
08:40:24.50 |
-38:48:25.4 |
HIP 42611 |
25.74 |
| 2026-10-06 00:00 |
08:40:41.02 |
-38:50:18.2 |
HIP 42611 |
26.82 |
| 2026-10-06 12:00 |
08:40:57.30 |
-38:52:11.7 |
HIP 42808 |
27.44 |
| 2026-10-07 00:00 |
08:41:13.33 |
-38:54:05.8 |
HIP 42808 |
24.33 |
| 2026-10-07 12:00 |
08:41:29.11 |
-38:56:00.6 |
HIP 42808 |
21.45 |
| 2026-10-08 00:00 |
08:41:44.64 |
-38:57:56.1 |
HIP 42808 |
18.87 |
| 2026-10-08 12:00 |
08:41:59.92 |
-38:59:52.1 |
HIP 42808 |
16.71 |
| 2026-10-09 00:00 |
08:42:14.94 |
-39:01:48.7 |
HIP 42805 |
13.51 |
| 2026-10-09 12:00 |
08:42:29.72 |
-39:03:45.8 |
HIP 42805 |
10.07 |
| 2026-10-10 00:00 |
08:42:44.23 |
-39:05:43.6 |
HIP 42805 |
6.69 |
| 2026-10-10 12:00 |
08:42:58.50 |
-39:07:41.8 |
HIP 42805 |
3.48 |
| 2026-10-11 00:00 |
08:43:12.50 |
-39:09:40.6 |
HIP 42805 |
1.63 |
| 2026-10-11 12:00 |
08:43:26.25 |
-39:11:39.8 |
HIP 42805 |
3.95 |
| 2026-10-12 00:00 |
08:43:39.74 |
-39:13:39.6 |
HIP 42805 |
7.10 |
| 2026-10-12 12:00 |
08:43:52.97 |
-39:15:39.7 |
HIP 42805 |
10.30 |
| 2026-10-13 00:00 |
08:44:05.94 |
-39:17:40.4 |
HIP 42805 |
13.49 |
| 2026-10-13 12:00 |
08:44:18.65 |
-39:19:41.4 |
HIP 42805 |
16.66 |
| 2026-10-14 00:00 |
08:44:31.10 |
-39:21:42.9 |
HIP 42821 |
18.25 |
| 2026-10-14 12:00 |
08:44:43.28 |
-39:23:44.7 |
HIP 42821 |
18.38 |
| 2026-10-15 00:00 |
08:44:55.20 |
-39:25:46.9 |
HIP 42821 |
18.98 |
| 2026-10-15 12:00 |
08:45:06.86 |
-39:27:49.4 |
HIP 42977 |
18.01 |
| 2026-10-16 00:00 |
08:45:18.24 |
-39:29:52.3 |
HIP 42977 |
15.52 |