| 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) |
| 2026-07-29 00:00 |
19:26:31.83 |
+05:05:04.3 |
HIP 95710 |
27.67 |
| 2026-07-29 12:00 |
19:26:04.78 |
+05:09:28.0 |
HIP 95421 |
26.39 |
| 2026-07-30 00:00 |
19:25:37.91 |
+05:13:48.7 |
HIP 95421 |
18.41 |
| 2026-07-30 12:00 |
19:25:11.19 |
+05:18:06.5 |
HIP 95421 |
10.49 |
| 2026-07-31 00:00 |
19:24:44.66 |
+05:22:21.4 |
HIP 95421 |
2.64 |
| 2026-07-31 12:00 |
19:24:18.29 |
+05:26:33.3 |
HIP 95421 |
5.16 |
| 2026-08-01 00:00 |
19:23:52.11 |
+05:30:42.3 |
HIP 95401 |
8.31 |
| 2026-08-01 12:00 |
19:23:26.11 |
+05:34:48.4 |
HIP 95401 |
14.19 |
| 2026-08-02 00:00 |
19:23:00.30 |
+05:38:51.6 |
HIP 95401 |
21.18 |
| 2026-08-02 12:00 |
19:22:34.67 |
+05:42:51.8 |
HIP 95133 |
25.84 |
| 2026-08-03 00:00 |
19:22:09.25 |
+05:46:49.2 |
HIP 95133 |
24.92 |
| 2026-08-03 12:00 |
19:21:44.02 |
+05:50:43.6 |
HIP 95133 |
26.16 |
| 2026-08-04 00:00 |
19:21:19.00 |
+05:54:35.2 |
HIP 95016 |
27.04 |
| 2026-08-04 12:00 |
19:20:54.18 |
+05:58:23.9 |
HIP 94996 |
19.90 |
| 2026-08-05 00:00 |
19:20:29.58 |
+06:02:09.7 |
HIP 94996 |
12.75 |
| 2026-08-05 12:00 |
19:20:05.19 |
+06:05:52.6 |
HIP 94996 |
5.75 |
| 2026-08-06 00:00 |
19:19:41.01 |
+06:09:32.7 |
HIP 94996 |
2.16 |
| 2026-08-06 12:00 |
19:19:17.06 |
+06:13:10.0 |
HIP 94996 |
8.61 |
| 2026-08-07 00:00 |
19:18:53.33 |
+06:16:44.4 |
HIP 94996 |
15.45 |
| 2026-08-07 12:00 |
19:18:29.83 |
+06:20:16.0 |
HIP 94996 |
22.25 |
| 2026-08-08 00:00 |
19:18:06.56 |
+06:23:44.7 |
HIP 94733 |
25.81 |
| 2026-08-08 12:00 |
19:17:43.53 |
+06:27:10.7 |
HIP 94733 |
19.15 |
| 2026-08-09 00:00 |
19:17:20.73 |
+06:30:33.9 |
HIP 94733 |
12.58 |
| 2026-08-09 12:00 |
19:16:58.18 |
+06:33:54.4 |
HIP 94733 |
6.13 |
| 2026-08-10 00:00 |
19:16:35.87 |
+06:37:12.1 |
HIP 94733 |
1.43 |
| 2026-08-10 12:00 |
19:16:13.81 |
+06:40:27.0 |
HIP 94733 |
6.96 |
| 2026-08-11 00:00 |
19:15:52.00 |
+06:43:39.3 |
HIP 94733 |
13.19 |
| 2026-08-11 12:00 |
19:15:30.44 |
+06:46:48.9 |
HIP 94733 |
19.38 |
| 2026-08-12 00:00 |
19:15:09.14 |
+06:49:55.7 |
HIP 94733 |
25.51 |
| 2026-08-12 12:00 |
19:14:48.10 |
+06:53:00.0 |
HIP 94456 |
23.73 |
| 2026-08-13 00:00 |
19:14:27.33 |
+06:56:01.6 |
HIP 94456 |
22.02 |
| 2026-08-13 12:00 |
19:14:06.82 |
+06:59:00.6 |
HIP 94456 |
21.85 |
| 2026-08-14 00:00 |
19:13:46.58 |
+07:01:57.1 |
HIP 94456 |
23.20 |
| 2026-08-14 12:00 |
19:13:26.60 |
+07:04:50.9 |
HIP 94456 |
25.78 |
| 2026-08-15 00:00 |
19:13:06.91 |
+07:07:42.3 |
HIP 94499 |
26.76 |
| 2026-08-15 12:00 |
19:12:47.48 |
+07:10:31.1 |
HIP 94499 |
27.25 |
| 2026-08-16 00:00 |
19:12:28.33 |
+07:13:17.4 |
HIP 94499 |
28.80 |
| 2026-08-16 12:00 |
19:12:09.47 |
+07:16:01.3 |
HIP 94499 |
31.20 |
| 2026-08-17 00:00 |
19:11:50.88 |
+07:18:42.7 |
HIP 94499 |
34.25 |
| 2026-08-17 12:00 |
19:11:32.58 |
+07:21:21.8 |
HIP 94330 |
35.22 |
| 2026-08-18 00:00 |
19:11:14.56 |
+07:23:58.4 |
HIP 94330 |
33.98 |
| 2026-08-18 12:00 |
19:10:56.83 |
+07:26:32.7 |
HIP 94285 |
32.93 |
| 2026-08-19 00:00 |
19:10:39.38 |
+07:29:04.6 |
HIP 94285 |
31.76 |