| Parameter |
Value |
| Designation |
313P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-04-10T12:13:52.524480Z |
| Orbit solution date (soln_date, UTC) |
2025-12-12T11:12:41Z |
| Obs used |
200 |
| NEO |
- |
| M1 |
17.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2017-08-29.0000000 |
| e |
0.23917627 |
| q (au) |
2.405470 |
| a (au) |
3.161666 |
| i (deg) |
10.948500 |
| Ω (om, deg) |
106.342997 |
| ω (w, deg) |
253.943073 |
| M (ma, deg) |
192.480572 |
Magnitude
Scatter + Global Linear
$$
M_a = (19.375 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
19.375 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.644 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
05:21:43.79 |
+17:17:36.0 |
HIP 24959 |
14.70 |
| 2026-07-29 12:00 |
05:22:30.71 |
+17:18:39.1 |
HIP 25220 |
16.13 |
| 2026-07-30 00:00 |
05:23:17.54 |
+17:19:41.1 |
HIP 25220 |
4.94 |
| 2026-07-30 12:00 |
05:24:04.27 |
+17:20:42.1 |
HIP 25278 |
5.53 |
| 2026-07-31 00:00 |
05:24:50.90 |
+17:21:42.1 |
HIP 25278 |
6.25 |
| 2026-07-31 12:00 |
05:25:37.44 |
+17:22:41.0 |
HIP 25278 |
17.21 |
| 2026-08-01 00:00 |
05:26:23.87 |
+17:23:38.9 |
HIP 25514 |
15.87 |
| 2026-08-01 12:00 |
05:27:10.20 |
+17:24:35.8 |
HIP 25514 |
8.92 |
| 2026-08-02 00:00 |
05:27:56.43 |
+17:25:31.7 |
HIP 25583 |
11.24 |
| 2026-08-02 12:00 |
05:28:42.55 |
+17:26:26.6 |
HIP 25583 |
15.55 |
| 2026-08-03 00:00 |
05:29:28.57 |
+17:27:20.5 |
HIP 25583 |
24.48 |
| 2026-08-03 12:00 |
05:30:14.49 |
+17:28:13.4 |
HIP 25888 |
21.49 |
| 2026-08-04 00:00 |
05:31:00.30 |
+17:29:05.3 |
HIP 25888 |
13.13 |
| 2026-08-04 12:00 |
05:31:46.01 |
+17:29:56.2 |
HIP 25888 |
11.08 |
| 2026-08-05 00:00 |
05:32:31.60 |
+17:30:46.2 |
HIP 26043 |
11.52 |
| 2026-08-05 12:00 |
05:33:17.09 |
+17:31:35.1 |
HIP 26043 |
3.07 |
| 2026-08-06 00:00 |
05:34:02.46 |
+17:32:23.1 |
HIP 26043 |
11.04 |
| 2026-08-06 12:00 |
05:34:47.73 |
+17:33:10.2 |
HIP 26043 |
21.65 |
| 2026-08-07 00:00 |
05:35:32.88 |
+17:33:56.2 |
HIP 26157 |
28.98 |
| 2026-08-07 12:00 |
05:36:17.92 |
+17:34:41.4 |
HIP 26382 |
34.07 |
| 2026-08-08 00:00 |
05:37:02.84 |
+17:35:25.5 |
HIP 26382 |
33.00 |
| 2026-08-08 12:00 |
05:37:47.65 |
+17:36:08.8 |
HIP 26520 |
33.16 |
| 2026-08-09 00:00 |
05:38:32.34 |
+17:36:51.1 |
HIP 26520 |
31.39 |
| 2026-08-09 12:00 |
05:39:16.91 |
+17:37:32.5 |
HIP 26786 |
30.59 |
| 2026-08-10 00:00 |
05:40:01.36 |
+17:38:13.0 |
HIP 26786 |
20.55 |
| 2026-08-10 12:00 |
05:40:45.69 |
+17:38:52.5 |
HIP 26786 |
11.59 |
| 2026-08-11 00:00 |
05:41:29.89 |
+17:39:31.2 |
HIP 26786 |
8.37 |
| 2026-08-11 12:00 |
05:42:13.97 |
+17:40:09.0 |
HIP 26786 |
15.09 |
| 2026-08-12 00:00 |
05:42:57.93 |
+17:40:45.8 |
HIP 26913 |
17.53 |
| 2026-08-12 12:00 |
05:43:41.76 |
+17:41:21.8 |
HIP 26913 |
21.97 |
| 2026-08-13 00:00 |
05:44:25.46 |
+17:41:56.9 |
HIP 26913 |
29.59 |
| 2026-08-13 12:00 |
05:45:09.03 |
+17:42:31.2 |
HIP 27301 |
27.27 |
| 2026-08-14 00:00 |
05:45:52.47 |
+17:43:04.6 |
HIP 27301 |
16.90 |
| 2026-08-14 12:00 |
05:46:35.78 |
+17:43:37.1 |
HIP 27301 |
6.58 |
| 2026-08-15 00:00 |
05:47:18.96 |
+17:44:08.8 |
HIP 27338 |
1.77 |
| 2026-08-15 12:00 |
05:48:02.00 |
+17:44:39.6 |
HIP 27374 |
3.83 |
| 2026-08-16 00:00 |
05:48:44.91 |
+17:45:09.7 |
HIP 27374 |
12.69 |
| 2026-08-16 12:00 |
05:49:27.68 |
+17:45:38.9 |
HIP 27590 |
22.14 |
| 2026-08-17 00:00 |
05:50:10.32 |
+17:46:07.3 |
HIP 27590 |
16.32 |
| 2026-08-17 12:00 |
05:50:52.81 |
+17:46:34.9 |
HIP 27590 |
15.78 |
| 2026-08-18 00:00 |
05:51:35.17 |
+17:47:01.7 |
HIP 27590 |
20.87 |
| 2026-08-18 12:00 |
05:52:17.38 |
+17:47:27.7 |
HIP 27841 |
28.10 |
| 2026-08-19 00:00 |
05:52:59.46 |
+17:47:53.0 |
HIP 27841 |
23.25 |