| Parameter |
Value |
| Designation |
335P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-22T07:32:06.869760Z |
| Orbit solution date (soln_date, UTC) |
2023-06-01T23:13:11Z |
| Obs used |
430 |
| NEO |
- |
| M1 |
17.000 |
| K1 |
7.750 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-05-16.0000000 |
| e |
0.54345355 |
| q (au) |
1.638014 |
| a (au) |
3.587837 |
| i (deg) |
7.275514 |
| Ω (om, deg) |
330.891145 |
| ω (w, deg) |
162.299106 |
| M (ma, deg) |
69.423380 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.188 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.188 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.634 |
| 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) |
| 2026-03-26 00:00 |
21:48:41.77 |
-14:47:50.3 |
HIP 107714 |
20.78 |
| 2026-03-26 12:00 |
21:49:01.16 |
-14:46:04.4 |
HIP 107714 |
21.34 |
| 2026-03-27 00:00 |
21:49:20.48 |
-14:44:18.9 |
HIP 107714 |
23.00 |
| 2026-03-27 12:00 |
21:49:39.72 |
-14:42:33.7 |
HIP 107861 |
22.07 |
| 2026-03-28 00:00 |
21:49:58.88 |
-14:40:48.8 |
HIP 107861 |
18.22 |
| 2026-03-28 12:00 |
21:50:17.97 |
-14:39:04.2 |
HIP 107861 |
15.05 |
| 2026-03-29 00:00 |
21:50:36.98 |
-14:37:20.0 |
HIP 107861 |
13.02 |
| 2026-03-29 12:00 |
21:50:55.91 |
-14:35:36.0 |
HIP 107861 |
12.69 |
| 2026-03-30 00:00 |
21:51:14.76 |
-14:33:52.4 |
HIP 107861 |
14.15 |
| 2026-03-30 12:00 |
21:51:33.53 |
-14:32:09.1 |
HIP 107861 |
16.92 |
| 2026-03-31 00:00 |
21:51:52.23 |
-14:30:26.1 |
HIP 107861 |
20.48 |
| 2026-03-31 12:00 |
21:52:10.84 |
-14:28:43.5 |
HIP 108044 |
24.39 |
| 2026-04-01 00:00 |
21:52:29.37 |
-14:27:01.2 |
HIP 108044 |
20.12 |
| 2026-04-01 12:00 |
21:52:47.82 |
-14:25:19.3 |
HIP 108044 |
16.17 |
| 2026-04-02 00:00 |
21:53:06.19 |
-14:23:37.7 |
HIP 108044 |
12.81 |
| 2026-04-02 12:00 |
21:53:24.48 |
-14:21:56.4 |
HIP 108044 |
10.58 |
| 2026-04-03 00:00 |
21:53:42.68 |
-14:20:15.6 |
HIP 108044 |
10.24 |
| 2026-04-03 12:00 |
21:54:00.80 |
-14:18:35.1 |
HIP 108044 |
11.91 |
| 2026-04-04 00:00 |
21:54:18.83 |
-14:16:54.9 |
HIP 108044 |
14.92 |
| 2026-04-04 12:00 |
21:54:36.78 |
-14:15:15.1 |
HIP 108044 |
18.62 |
| 2026-04-05 00:00 |
21:54:54.65 |
-14:13:35.7 |
HIP 108274 |
21.08 |
| 2026-04-05 12:00 |
21:55:12.42 |
-14:11:56.7 |
HIP 108274 |
16.59 |
| 2026-04-06 00:00 |
21:55:30.11 |
-14:10:18.1 |
HIP 108274 |
12.22 |
| 2026-04-06 12:00 |
21:55:47.71 |
-14:08:39.9 |
HIP 108274 |
8.12 |
| 2026-04-07 00:00 |
21:56:05.22 |
-14:07:02.0 |
HIP 108274 |
4.94 |
| 2026-04-07 12:00 |
21:56:22.64 |
-14:05:24.6 |
HIP 108274 |
4.90 |
| 2026-04-08 00:00 |
21:56:39.98 |
-14:03:47.5 |
HIP 108274 |
8.02 |
| 2026-04-08 12:00 |
21:56:57.22 |
-14:02:10.9 |
HIP 108274 |
12.03 |
| 2026-04-09 00:00 |
21:57:14.37 |
-14:00:34.7 |
HIP 108318 |
14.50 |
| 2026-04-09 12:00 |
21:57:31.42 |
-13:58:58.9 |
HIP 108318 |
16.14 |
| 2026-04-10 00:00 |
21:57:48.39 |
-13:57:23.6 |
HIP 108318 |
18.70 |
| 2026-04-10 12:00 |
21:58:05.25 |
-13:55:48.7 |
HIP 108318 |
21.83 |
| 2026-04-11 00:00 |
21:58:22.03 |
-13:54:14.2 |
HIP 108318 |
25.33 |
| 2026-04-11 12:00 |
21:58:38.71 |
-13:52:40.1 |
HIP 108318 |
29.03 |
| 2026-04-12 00:00 |
21:58:55.29 |
-13:51:06.6 |
HIP 108647 |
25.78 |
| 2026-04-12 12:00 |
21:59:11.78 |
-13:49:33.4 |
HIP 108647 |
21.53 |
| 2026-04-13 00:00 |
21:59:28.16 |
-13:48:00.7 |
HIP 108647 |
17.31 |
| 2026-04-13 12:00 |
21:59:44.45 |
-13:46:28.5 |
HIP 108647 |
13.16 |
| 2026-04-14 00:00 |
22:00:00.64 |
-13:44:56.8 |
HIP 108647 |
9.12 |
| 2026-04-14 12:00 |
22:00:16.73 |
-13:43:25.5 |
HIP 108647 |
5.38 |
| 2026-04-15 00:00 |
22:00:32.72 |
-13:41:54.8 |
HIP 108647 |
3.13 |
| 2026-04-15 12:00 |
22:00:48.61 |
-13:40:24.5 |
HIP 108647 |
5.03 |
| 2026-04-16 00:00 |
22:01:04.39 |
-13:38:54.7 |
HIP 108647 |
8.64 |