| Parameter |
Value |
| Designation |
P/2013 N3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-02-11T18:34:46.231680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:37Z |
| Obs used |
43 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
20.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-07-30.0000000 |
| e |
0.59242870 |
| q (au) |
3.028877 |
| a (au) |
7.431528 |
| i (deg) |
2.170408 |
| Ω (om, deg) |
17.680575 |
| ω (w, deg) |
323.949612 |
| M (ma, deg) |
350.426848 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.371 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.371 |
| n |
6.000 |
| gf |
0.984 |
| gb |
-0.991 |
| k |
1.000 |
| δ90 |
7.774 |
| 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 |
11:32:56.67 |
+03:59:00.3 |
HIP 56378 |
11.45 |
| 2026-03-26 12:00 |
11:32:48.41 |
+03:59:51.6 |
HIP 56378 |
12.22 |
| 2026-03-27 00:00 |
11:32:40.16 |
+04:00:42.7 |
HIP 56378 |
13.33 |
| 2026-03-27 12:00 |
11:32:31.94 |
+04:01:33.7 |
HIP 56378 |
14.69 |
| 2026-03-28 00:00 |
11:32:23.75 |
+04:02:24.4 |
HIP 56378 |
16.23 |
| 2026-03-28 12:00 |
11:32:15.58 |
+04:03:15.0 |
HIP 56378 |
17.91 |
| 2026-03-29 00:00 |
11:32:07.43 |
+04:04:05.4 |
HIP 56378 |
19.69 |
| 2026-03-29 12:00 |
11:31:59.31 |
+04:04:55.5 |
HIP 56378 |
21.54 |
| 2026-03-30 00:00 |
11:31:51.22 |
+04:05:45.5 |
HIP 56378 |
23.44 |
| 2026-03-30 12:00 |
11:31:43.16 |
+04:06:35.2 |
HIP 56378 |
25.38 |
| 2026-03-31 00:00 |
11:31:35.13 |
+04:07:24.8 |
HIP 56235 |
25.29 |
| 2026-03-31 12:00 |
11:31:27.13 |
+04:08:14.1 |
HIP 56235 |
24.67 |
| 2026-04-01 00:00 |
11:31:19.15 |
+04:09:03.1 |
HIP 56235 |
24.22 |
| 2026-04-01 12:00 |
11:31:11.21 |
+04:09:52.0 |
HIP 56235 |
23.97 |
| 2026-04-02 00:00 |
11:31:03.31 |
+04:10:40.6 |
HIP 56235 |
23.90 |
| 2026-04-02 12:00 |
11:30:55.43 |
+04:11:28.9 |
HIP 56235 |
24.02 |
| 2026-04-03 00:00 |
11:30:47.59 |
+04:12:17.0 |
HIP 56235 |
24.33 |
| 2026-04-03 12:00 |
11:30:39.79 |
+04:13:04.9 |
HIP 56235 |
24.81 |
| 2026-04-04 00:00 |
11:30:32.02 |
+04:13:52.5 |
HIP 56235 |
25.45 |
| 2026-04-04 12:00 |
11:30:24.28 |
+04:14:39.8 |
HIP 56235 |
26.24 |
| 2026-04-05 00:00 |
11:30:16.59 |
+04:15:26.9 |
HIP 56235 |
27.17 |
| 2026-04-05 12:00 |
11:30:08.93 |
+04:16:13.6 |
HIP 56235 |
28.21 |
| 2026-04-06 00:00 |
11:30:01.31 |
+04:17:00.1 |
HIP 56235 |
29.35 |
| 2026-04-06 12:00 |
11:29:53.73 |
+04:17:46.4 |
HIP 56235 |
30.58 |
| 2026-04-07 00:00 |
11:29:46.20 |
+04:18:32.3 |
HIP 56073 |
31.85 |
| 2026-04-07 12:00 |
11:29:38.70 |
+04:19:17.9 |
HIP 56073 |
32.51 |
| 2026-04-08 00:00 |
11:29:31.24 |
+04:20:03.3 |
HIP 56073 |
33.28 |
| 2026-04-08 12:00 |
11:29:23.83 |
+04:20:48.3 |
HIP 56073 |
34.14 |
| 2026-04-09 00:00 |
11:29:16.46 |
+04:21:33.0 |
HIP 55915 |
33.50 |
| 2026-04-09 12:00 |
11:29:09.14 |
+04:22:17.5 |
HIP 55915 |
32.72 |
| 2026-04-10 00:00 |
11:29:01.86 |
+04:23:01.6 |
HIP 55915 |
32.06 |
| 2026-04-10 12:00 |
11:28:54.63 |
+04:23:45.3 |
HIP 55915 |
31.50 |
| 2026-04-11 00:00 |
11:28:47.45 |
+04:24:28.8 |
HIP 55915 |
31.05 |
| 2026-04-11 12:00 |
11:28:40.31 |
+04:25:11.9 |
HIP 55915 |
30.73 |
| 2026-04-12 00:00 |
11:28:33.22 |
+04:25:54.7 |
HIP 55915 |
30.52 |
| 2026-04-12 12:00 |
11:28:26.18 |
+04:26:37.2 |
HIP 55915 |
30.43 |
| 2026-04-13 00:00 |
11:28:19.19 |
+04:27:19.3 |
HIP 55915 |
30.45 |
| 2026-04-13 12:00 |
11:28:12.25 |
+04:28:01.0 |
HIP 55915 |
30.59 |
| 2026-04-14 00:00 |
11:28:05.36 |
+04:28:42.4 |
HIP 55915 |
30.84 |
| 2026-04-14 12:00 |
11:27:58.52 |
+04:29:23.4 |
HIP 55915 |
31.19 |
| 2026-04-15 00:00 |
11:27:51.74 |
+04:30:04.1 |
HIP 55915 |
31.64 |
| 2026-04-15 12:00 |
11:27:45.01 |
+04:30:44.4 |
HIP 55915 |
32.18 |
| 2026-04-16 00:00 |
11:27:38.33 |
+04:31:24.3 |
HIP 55915 |
32.81 |