| Parameter |
Value |
| Designation |
C/2026 L2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-04-09T19:27:32.852160Z |
| Orbit solution date (soln_date, UTC) |
2026-07-16T19:12:20Z |
| Obs used |
36 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-06-12T13:28:28.329600Z |
| Discovery magnitude (MPC) |
20.83 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2026-06-11.0000000 |
| e |
0.99898802 |
| q (au) |
3.398728 |
| a (au) |
3358.508656 |
| i (deg) |
55.538977 |
| Ω (om, deg) |
283.666282 |
| ω (w, deg) |
359.995877 |
| M (ma, deg) |
0.000315 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.804 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.804 |
| n |
2.000 |
| gf |
0.963 |
| gb |
-1.000 |
| k |
0.991 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
19:02:27.04 |
+09:10:25.0 |
HIP 93468 |
25.30 |
| 2026-09-20 12:00 |
19:02:29.00 |
+09:11:22.4 |
HIP 93362 |
26.32 |
| 2026-09-21 00:00 |
19:02:31.23 |
+09:12:19.1 |
HIP 93494 |
25.70 |
| 2026-09-21 12:00 |
19:02:33.74 |
+09:13:15.3 |
HIP 93494 |
24.81 |
| 2026-09-22 00:00 |
19:02:36.53 |
+09:14:11.0 |
HIP 93494 |
23.95 |
| 2026-09-22 12:00 |
19:02:39.59 |
+09:15:06.1 |
HIP 93494 |
23.13 |
| 2026-09-23 00:00 |
19:02:42.93 |
+09:16:00.8 |
HIP 93494 |
22.37 |
| 2026-09-23 12:00 |
19:02:46.53 |
+09:16:55.0 |
HIP 93494 |
21.68 |
| 2026-09-24 00:00 |
19:02:50.41 |
+09:17:48.8 |
HIP 93494 |
21.07 |
| 2026-09-24 12:00 |
19:02:54.56 |
+09:18:42.1 |
HIP 93494 |
20.55 |
| 2026-09-25 00:00 |
19:02:58.97 |
+09:19:35.0 |
HIP 93494 |
20.14 |
| 2026-09-25 12:00 |
19:03:03.66 |
+09:20:27.5 |
HIP 93494 |
19.86 |
| 2026-09-26 00:00 |
19:03:08.60 |
+09:21:19.7 |
HIP 93494 |
19.73 |
| 2026-09-26 12:00 |
19:03:13.81 |
+09:22:11.5 |
HIP 93494 |
19.74 |
| 2026-09-27 00:00 |
19:03:19.28 |
+09:23:03.0 |
HIP 93494 |
19.93 |
| 2026-09-27 12:00 |
19:03:25.01 |
+09:23:54.2 |
HIP 93494 |
20.29 |
| 2026-09-28 00:00 |
19:03:31.01 |
+09:24:45.0 |
HIP 93494 |
20.83 |
| 2026-09-28 12:00 |
19:03:37.25 |
+09:25:35.7 |
HIP 93494 |
21.55 |
| 2026-09-29 00:00 |
19:03:43.76 |
+09:26:26.0 |
HIP 93494 |
22.44 |
| 2026-09-29 12:00 |
19:03:50.52 |
+09:27:16.2 |
HIP 93732 |
22.29 |
| 2026-09-30 00:00 |
19:03:57.53 |
+09:28:06.1 |
HIP 93732 |
20.38 |
| 2026-09-30 12:00 |
19:04:04.80 |
+09:28:55.8 |
HIP 93732 |
18.41 |
| 2026-10-01 00:00 |
19:04:12.32 |
+09:29:45.4 |
HIP 93732 |
16.40 |
| 2026-10-01 12:00 |
19:04:20.09 |
+09:30:34.8 |
HIP 93732 |
14.35 |
| 2026-10-02 00:00 |
19:04:28.10 |
+09:31:24.1 |
HIP 93732 |
12.26 |
| 2026-10-02 12:00 |
19:04:36.37 |
+09:32:13.2 |
HIP 93732 |
10.13 |
| 2026-10-03 00:00 |
19:04:44.88 |
+09:33:02.2 |
HIP 93732 |
8.01 |
| 2026-10-03 12:00 |
19:04:53.63 |
+09:33:51.2 |
HIP 93732 |
5.95 |
| 2026-10-04 00:00 |
19:05:02.63 |
+09:34:40.1 |
HIP 93732 |
4.13 |
| 2026-10-04 12:00 |
19:05:11.87 |
+09:35:28.9 |
HIP 93732 |
3.15 |
| 2026-10-05 00:00 |
19:05:21.35 |
+09:36:17.7 |
HIP 93732 |
3.87 |
| 2026-10-05 12:00 |
19:05:31.07 |
+09:37:06.6 |
HIP 93732 |
5.73 |
| 2026-10-06 00:00 |
19:05:41.03 |
+09:37:55.4 |
HIP 93732 |
8.03 |
| 2026-10-06 12:00 |
19:05:51.23 |
+09:38:44.2 |
HIP 93766 |
7.66 |
| 2026-10-07 00:00 |
19:06:01.66 |
+09:39:33.2 |
HIP 93766 |
7.86 |
| 2026-10-07 12:00 |
19:06:12.33 |
+09:40:22.1 |
HIP 93766 |
8.97 |
| 2026-10-08 00:00 |
19:06:23.23 |
+09:41:11.2 |
HIP 93766 |
10.73 |
| 2026-10-08 12:00 |
19:06:34.36 |
+09:42:00.4 |
HIP 93766 |
12.92 |
| 2026-10-09 00:00 |
19:06:45.72 |
+09:42:49.7 |
HIP 93766 |
15.39 |
| 2026-10-09 12:00 |
19:06:57.31 |
+09:43:39.1 |
HIP 93766 |
18.05 |
| 2026-10-10 00:00 |
19:07:09.13 |
+09:44:28.7 |
HIP 93986 |
18.14 |
| 2026-10-10 12:00 |
19:07:21.17 |
+09:45:18.5 |
HIP 93986 |
16.22 |
| 2026-10-11 00:00 |
19:07:33.44 |
+09:46:08.5 |
HIP 93986 |
14.67 |