C/2011 C3 (Gibbs)
| Parameter |
Value |
| Designation |
C/2011 C3 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-04-07T12:40:26.362560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:48Z |
| Obs used |
80 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
22.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-03-16.0000000 |
| e |
0.99527440 |
| q (au) |
1.516895 |
| a (au) |
320.995070 |
| i (deg) |
49.376107 |
| Ω (om, deg) |
20.889963 |
| ω (w, deg) |
206.809905 |
| M (ma, deg) |
359.996139 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.952 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.952 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
01:14:08.31 |
+09:46:02.0 |
HIP 5837 |
10.68 |
| 2026-02-03 12:00 |
01:14:09.78 |
+09:46:11.6 |
HIP 5837 |
10.35 |
| 2026-02-04 00:00 |
01:14:11.28 |
+09:46:21.3 |
HIP 5837 |
10.01 |
| 2026-02-04 12:00 |
01:14:12.80 |
+09:46:31.2 |
HIP 5837 |
9.68 |
| 2026-02-05 00:00 |
01:14:14.35 |
+09:46:41.3 |
HIP 5837 |
9.34 |
| 2026-02-05 12:00 |
01:14:15.92 |
+09:46:51.5 |
HIP 5837 |
9.01 |
| 2026-02-06 00:00 |
01:14:17.53 |
+09:47:01.9 |
HIP 5837 |
8.68 |
| 2026-02-06 12:00 |
01:14:19.15 |
+09:47:12.4 |
HIP 5837 |
8.35 |
| 2026-02-07 00:00 |
01:14:20.81 |
+09:47:23.2 |
HIP 5837 |
8.03 |
| 2026-02-07 12:00 |
01:14:22.49 |
+09:47:34.0 |
HIP 5837 |
7.72 |
| 2026-02-08 00:00 |
01:14:24.19 |
+09:47:45.1 |
HIP 5837 |
7.42 |
| 2026-02-08 12:00 |
01:14:25.92 |
+09:47:56.3 |
HIP 5837 |
7.13 |
| 2026-02-09 00:00 |
01:14:27.68 |
+09:48:07.6 |
HIP 5837 |
6.85 |
| 2026-02-09 12:00 |
01:14:29.46 |
+09:48:19.2 |
HIP 5837 |
6.60 |
| 2026-02-10 00:00 |
01:14:31.26 |
+09:48:30.8 |
HIP 5837 |
6.36 |
| 2026-02-10 12:00 |
01:14:33.09 |
+09:48:42.7 |
HIP 5837 |
6.15 |
| 2026-02-11 00:00 |
01:14:34.95 |
+09:48:54.7 |
HIP 5837 |
5.98 |
| 2026-02-11 12:00 |
01:14:36.83 |
+09:49:06.8 |
HIP 5837 |
5.84 |
| 2026-02-12 00:00 |
01:14:38.73 |
+09:49:19.1 |
HIP 5837 |
5.74 |
| 2026-02-12 12:00 |
01:14:40.66 |
+09:49:31.5 |
HIP 5837 |
5.68 |
| 2026-02-13 00:00 |
01:14:42.62 |
+09:49:44.2 |
HIP 5837 |
5.68 |
| 2026-02-13 12:00 |
01:14:44.59 |
+09:49:56.9 |
HIP 5837 |
5.72 |
| 2026-02-14 00:00 |
01:14:46.59 |
+09:50:09.8 |
HIP 5837 |
5.81 |
| 2026-02-14 12:00 |
01:14:48.62 |
+09:50:22.9 |
HIP 5837 |
5.95 |
| 2026-02-15 00:00 |
01:14:50.67 |
+09:50:36.1 |
HIP 5837 |
6.14 |
| 2026-02-15 12:00 |
01:14:52.74 |
+09:50:49.4 |
HIP 5837 |
6.37 |
| 2026-02-16 00:00 |
01:14:54.84 |
+09:51:02.9 |
HIP 5837 |
6.64 |
| 2026-02-16 12:00 |
01:14:56.95 |
+09:51:16.6 |
HIP 5837 |
6.96 |
| 2026-02-17 00:00 |
01:14:59.09 |
+09:51:30.4 |
HIP 5837 |
7.30 |
| 2026-02-17 12:00 |
01:15:01.26 |
+09:51:44.3 |
HIP 5837 |
7.68 |
| 2026-02-18 00:00 |
01:15:03.44 |
+09:51:58.4 |
HIP 5837 |
8.09 |
| 2026-02-18 12:00 |
01:15:05.65 |
+09:52:12.6 |
HIP 5837 |
8.52 |
| 2026-02-19 00:00 |
01:15:07.88 |
+09:52:27.0 |
HIP 5837 |
8.98 |
| 2026-02-19 12:00 |
01:15:10.14 |
+09:52:41.5 |
HIP 5837 |
9.46 |
| 2026-02-20 00:00 |
01:15:12.41 |
+09:52:56.2 |
HIP 5837 |
9.95 |
| 2026-02-20 12:00 |
01:15:14.71 |
+09:53:11.0 |
HIP 5898 |
9.98 |
| 2026-02-21 00:00 |
01:15:17.02 |
+09:53:25.9 |
HIP 5898 |
9.69 |
| 2026-02-21 12:00 |
01:15:19.36 |
+09:53:40.9 |
HIP 5898 |
9.44 |
| 2026-02-22 00:00 |
01:15:21.72 |
+09:53:56.1 |
HIP 5898 |
9.22 |
| 2026-02-22 12:00 |
01:15:24.10 |
+09:54:11.5 |
HIP 5898 |
9.04 |
| 2026-02-23 00:00 |
01:15:26.50 |
+09:54:26.9 |
HIP 5898 |
8.90 |
| 2026-02-23 12:00 |
01:15:28.92 |
+09:54:42.5 |
HIP 5898 |
8.80 |
| 2026-02-24 00:00 |
01:15:31.36 |
+09:54:58.2 |
HIP 5898 |
8.75 |