| 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
$$
M_a = (9.315 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.315 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-07-29 00:00 |
11:30:43.38 |
+04:00:04.1 |
HIP 56073 |
21.45 |
| 2026-07-29 12:00 |
11:30:51.31 |
+03:59:10.6 |
HIP 56073 |
22.53 |
| 2026-07-30 00:00 |
11:30:59.29 |
+03:58:16.8 |
HIP 56073 |
23.77 |
| 2026-07-30 12:00 |
11:31:07.31 |
+03:57:22.6 |
HIP 56073 |
25.15 |
| 2026-07-31 00:00 |
11:31:15.38 |
+03:56:28.2 |
HIP 56073 |
26.65 |
| 2026-07-31 12:00 |
11:31:23.49 |
+03:55:33.5 |
HIP 56073 |
28.25 |
| 2026-08-01 00:00 |
11:31:31.65 |
+03:54:38.6 |
HIP 56073 |
29.94 |
| 2026-08-01 12:00 |
11:31:39.85 |
+03:53:43.3 |
HIP 56378 |
29.84 |
| 2026-08-02 00:00 |
11:31:48.10 |
+03:52:47.8 |
HIP 56378 |
28.53 |
| 2026-08-02 12:00 |
11:31:56.39 |
+03:51:52.0 |
HIP 56378 |
27.35 |
| 2026-08-03 00:00 |
11:32:04.73 |
+03:50:55.9 |
HIP 56378 |
26.30 |
| 2026-08-03 12:00 |
11:32:13.11 |
+03:49:59.5 |
HIP 56378 |
25.41 |
| 2026-08-04 00:00 |
11:32:21.54 |
+03:49:02.9 |
HIP 56378 |
24.70 |
| 2026-08-04 12:00 |
11:32:30.00 |
+03:48:06.0 |
HIP 56378 |
24.18 |
| 2026-08-05 00:00 |
11:32:38.51 |
+03:47:08.8 |
HIP 56378 |
23.88 |
| 2026-08-05 12:00 |
11:32:47.06 |
+03:46:11.4 |
HIP 56378 |
23.80 |
| 2026-08-06 00:00 |
11:32:55.65 |
+03:45:13.7 |
HIP 56378 |
23.95 |
| 2026-08-06 12:00 |
11:33:04.29 |
+03:44:15.8 |
HIP 56371 |
22.84 |
| 2026-08-07 00:00 |
11:33:12.96 |
+03:43:17.6 |
HIP 56371 |
21.61 |
| 2026-08-07 12:00 |
11:33:21.68 |
+03:42:19.1 |
HIP 56371 |
20.57 |
| 2026-08-08 00:00 |
11:33:30.43 |
+03:41:20.4 |
HIP 56371 |
19.77 |
| 2026-08-08 12:00 |
11:33:39.23 |
+03:40:21.4 |
HIP 56371 |
19.23 |
| 2026-08-09 00:00 |
11:33:48.06 |
+03:39:22.2 |
HIP 56371 |
18.98 |
| 2026-08-09 12:00 |
11:33:56.93 |
+03:38:22.8 |
HIP 56371 |
19.04 |
| 2026-08-10 00:00 |
11:34:05.85 |
+03:37:23.1 |
HIP 56371 |
19.41 |
| 2026-08-10 12:00 |
11:34:14.80 |
+03:36:23.2 |
HIP 56371 |
20.07 |
| 2026-08-11 00:00 |
11:34:23.78 |
+03:35:23.1 |
HIP 56371 |
21.00 |
| 2026-08-11 12:00 |
11:34:32.81 |
+03:34:22.7 |
HIP 56371 |
22.18 |
| 2026-08-12 00:00 |
11:34:41.87 |
+03:33:22.1 |
HIP 56371 |
23.56 |
| 2026-08-12 12:00 |
11:34:50.97 |
+03:32:21.2 |
HIP 56371 |
25.11 |
| 2026-08-13 00:00 |
11:35:00.10 |
+03:31:20.2 |
HIP 56598 |
22.84 |
| 2026-08-13 12:00 |
11:35:09.27 |
+03:30:18.9 |
HIP 56598 |
20.39 |
| 2026-08-14 00:00 |
11:35:18.47 |
+03:29:17.4 |
HIP 56598 |
17.95 |
| 2026-08-14 12:00 |
11:35:27.71 |
+03:28:15.7 |
HIP 56598 |
15.52 |
| 2026-08-15 00:00 |
11:35:36.98 |
+03:27:13.8 |
HIP 56598 |
13.12 |
| 2026-08-15 12:00 |
11:35:46.28 |
+03:26:11.6 |
HIP 56598 |
10.77 |
| 2026-08-16 00:00 |
11:35:55.62 |
+03:25:09.3 |
HIP 56598 |
8.52 |
| 2026-08-16 12:00 |
11:36:04.99 |
+03:24:06.8 |
HIP 56598 |
6.50 |
| 2026-08-17 00:00 |
11:36:14.39 |
+03:23:04.1 |
HIP 56598 |
5.00 |
| 2026-08-17 12:00 |
11:36:23.82 |
+03:22:01.2 |
HIP 56598 |
4.57 |
| 2026-08-18 00:00 |
11:36:33.29 |
+03:20:58.1 |
HIP 56598 |
5.48 |
| 2026-08-18 12:00 |
11:36:42.78 |
+03:19:54.8 |
HIP 56598 |
7.26 |
| 2026-08-19 00:00 |
11:36:52.31 |
+03:18:51.3 |
HIP 56598 |
9.44 |