| Parameter |
Value |
| Designation |
P/2013 N5 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-07-02T10:34:14.370240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:37Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
18.100 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-08-12.0000000 |
| e |
0.73191499 |
| q (au) |
1.823049 |
| a (au) |
6.800265 |
| i (deg) |
23.242478 |
| Ω (om, deg) |
187.746026 |
| ω (w, deg) |
176.242550 |
| M (ma, deg) |
2.254283 |
Magnitude
Scatter + Global Linear
$$
M_a = (19.487 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
19.487 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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 |
13:19:50.87 |
-00:42:55.4 |
HIP 64838 |
35.32 |
| 2026-07-29 12:00 |
13:19:55.49 |
-00:43:32.5 |
HIP 64968 |
35.61 |
| 2026-07-30 00:00 |
13:20:00.19 |
-00:44:10.0 |
HIP 64968 |
35.53 |
| 2026-07-30 12:00 |
13:20:04.97 |
-00:44:47.9 |
HIP 64968 |
35.51 |
| 2026-07-31 00:00 |
13:20:09.84 |
-00:45:26.2 |
HIP 64968 |
35.54 |
| 2026-07-31 12:00 |
13:20:14.78 |
-00:46:04.9 |
HIP 65261 |
35.38 |
| 2026-08-01 00:00 |
13:20:19.80 |
-00:46:44.1 |
HIP 65261 |
34.42 |
| 2026-08-01 12:00 |
13:20:24.90 |
-00:47:23.6 |
HIP 65261 |
33.47 |
| 2026-08-02 00:00 |
13:20:30.09 |
-00:48:03.6 |
HIP 65261 |
32.54 |
| 2026-08-02 12:00 |
13:20:35.35 |
-00:48:43.9 |
HIP 65261 |
31.64 |
| 2026-08-03 00:00 |
13:20:40.69 |
-00:49:24.7 |
HIP 65261 |
30.76 |
| 2026-08-03 12:00 |
13:20:46.11 |
-00:50:05.9 |
HIP 65261 |
29.93 |
| 2026-08-04 00:00 |
13:20:51.60 |
-00:50:47.4 |
HIP 65261 |
29.13 |
| 2026-08-04 12:00 |
13:20:57.18 |
-00:51:29.4 |
HIP 65261 |
28.39 |
| 2026-08-05 00:00 |
13:21:02.83 |
-00:52:11.7 |
HIP 65261 |
27.70 |
| 2026-08-05 12:00 |
13:21:08.56 |
-00:52:54.4 |
HIP 65261 |
27.08 |
| 2026-08-06 00:00 |
13:21:14.36 |
-00:53:37.5 |
HIP 65261 |
26.53 |
| 2026-08-06 12:00 |
13:21:20.24 |
-00:54:21.0 |
HIP 65261 |
26.06 |
| 2026-08-07 00:00 |
13:21:26.20 |
-00:55:04.8 |
HIP 65261 |
25.68 |
| 2026-08-07 12:00 |
13:21:32.24 |
-00:55:49.1 |
HIP 65261 |
25.39 |
| 2026-08-08 00:00 |
13:21:38.35 |
-00:56:33.7 |
HIP 65261 |
25.22 |
| 2026-08-08 12:00 |
13:21:44.54 |
-00:57:18.7 |
HIP 65261 |
25.15 |
| 2026-08-09 00:00 |
13:21:50.80 |
-00:58:04.0 |
HIP 65261 |
25.20 |
| 2026-08-09 12:00 |
13:21:57.14 |
-00:58:49.7 |
HIP 65261 |
25.37 |
| 2026-08-10 00:00 |
13:22:03.55 |
-00:59:35.7 |
HIP 65261 |
25.66 |
| 2026-08-10 12:00 |
13:22:10.03 |
-01:00:22.1 |
HIP 65261 |
26.07 |
| 2026-08-11 00:00 |
13:22:16.59 |
-01:01:08.9 |
HIP 65261 |
26.60 |
| 2026-08-11 12:00 |
13:22:23.23 |
-01:01:56.0 |
HIP 65261 |
27.24 |
| 2026-08-12 00:00 |
13:22:29.93 |
-01:02:43.4 |
HIP 65360 |
26.81 |
| 2026-08-12 12:00 |
13:22:36.71 |
-01:03:31.2 |
HIP 65360 |
26.29 |
| 2026-08-13 00:00 |
13:22:43.56 |
-01:04:19.3 |
HIP 65360 |
25.89 |
| 2026-08-13 12:00 |
13:22:50.49 |
-01:05:07.7 |
HIP 65360 |
25.63 |
| 2026-08-14 00:00 |
13:22:57.48 |
-01:05:56.5 |
HIP 65360 |
25.50 |
| 2026-08-14 12:00 |
13:23:04.55 |
-01:06:45.6 |
HIP 65360 |
25.51 |
| 2026-08-15 00:00 |
13:23:11.69 |
-01:07:35.0 |
HIP 65360 |
25.67 |
| 2026-08-15 12:00 |
13:23:18.89 |
-01:08:24.7 |
HIP 65360 |
25.98 |
| 2026-08-16 00:00 |
13:23:26.17 |
-01:09:14.8 |
HIP 65360 |
26.44 |
| 2026-08-16 12:00 |
13:23:33.52 |
-01:10:05.1 |
HIP 65360 |
27.05 |
| 2026-08-17 00:00 |
13:23:40.93 |
-01:10:55.7 |
HIP 65360 |
27.79 |
| 2026-08-17 12:00 |
13:23:48.41 |
-01:11:46.7 |
HIP 65360 |
28.66 |
| 2026-08-18 00:00 |
13:23:55.96 |
-01:12:37.9 |
HIP 65360 |
29.66 |
| 2026-08-18 12:00 |
13:24:03.58 |
-01:13:29.4 |
HIP 65360 |
30.77 |
| 2026-08-19 00:00 |
13:24:11.27 |
-01:14:21.2 |
HIP 65545 |
30.18 |