| Parameter |
Value |
| Designation |
C/2012 F1 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-02-19T02:09:39.654720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:05Z |
| Obs used |
83 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-03-22.0000000 |
| e |
0.96570670 |
| q (au) |
2.550934 |
| a (au) |
74.385762 |
| i (deg) |
159.396833 |
| Ω (om, deg) |
129.965498 |
| ω (w, deg) |
300.425399 |
| M (ma, deg) |
0.049023 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.982 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.982 |
| n |
2.000 |
| gf |
0.801 |
| gb |
-0.500 |
| k |
0.899 |
| δ90 |
1.000 |
| 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 |
02:09:36.74 |
+34:45:27.2 |
HIP 10064 |
13.82 |
| 2026-07-29 12:00 |
02:09:36.24 |
+34:45:46.9 |
HIP 10064 |
13.48 |
| 2026-07-30 00:00 |
02:09:35.70 |
+34:46:06.4 |
HIP 10064 |
13.15 |
| 2026-07-30 12:00 |
02:09:35.12 |
+34:46:25.8 |
HIP 10064 |
12.82 |
| 2026-07-31 00:00 |
02:09:34.50 |
+34:46:45.0 |
HIP 10064 |
12.50 |
| 2026-07-31 12:00 |
02:09:33.84 |
+34:47:04.1 |
HIP 10064 |
12.18 |
| 2026-08-01 00:00 |
02:09:33.15 |
+34:47:23.0 |
HIP 10064 |
11.86 |
| 2026-08-01 12:00 |
02:09:32.41 |
+34:47:41.8 |
HIP 10064 |
11.55 |
| 2026-08-02 00:00 |
02:09:31.64 |
+34:48:00.4 |
HIP 10064 |
11.24 |
| 2026-08-02 12:00 |
02:09:30.83 |
+34:48:18.8 |
HIP 10064 |
10.94 |
| 2026-08-03 00:00 |
02:09:29.98 |
+34:48:37.1 |
HIP 10064 |
10.64 |
| 2026-08-03 12:00 |
02:09:29.09 |
+34:48:55.2 |
HIP 10064 |
10.35 |
| 2026-08-04 00:00 |
02:09:28.16 |
+34:49:13.2 |
HIP 10064 |
10.06 |
| 2026-08-04 12:00 |
02:09:27.20 |
+34:49:30.9 |
HIP 10064 |
9.79 |
| 2026-08-05 00:00 |
02:09:26.19 |
+34:49:48.5 |
HIP 10064 |
9.52 |
| 2026-08-05 12:00 |
02:09:25.15 |
+34:50:05.9 |
HIP 10064 |
9.27 |
| 2026-08-06 00:00 |
02:09:24.06 |
+34:50:23.2 |
HIP 10064 |
9.03 |
| 2026-08-06 12:00 |
02:09:22.94 |
+34:50:40.3 |
HIP 10064 |
8.79 |
| 2026-08-07 00:00 |
02:09:21.78 |
+34:50:57.1 |
HIP 10064 |
8.58 |
| 2026-08-07 12:00 |
02:09:20.58 |
+34:51:13.9 |
HIP 10064 |
8.38 |
| 2026-08-08 00:00 |
02:09:19.34 |
+34:51:30.4 |
HIP 10064 |
8.20 |
| 2026-08-08 12:00 |
02:09:18.07 |
+34:51:46.7 |
HIP 10064 |
8.03 |
| 2026-08-09 00:00 |
02:09:16.75 |
+34:52:02.9 |
HIP 10064 |
7.89 |
| 2026-08-09 12:00 |
02:09:15.39 |
+34:52:18.9 |
HIP 10064 |
7.77 |
| 2026-08-10 00:00 |
02:09:14.00 |
+34:52:34.7 |
HIP 10064 |
7.67 |
| 2026-08-10 12:00 |
02:09:12.57 |
+34:52:50.2 |
HIP 10064 |
7.60 |
| 2026-08-11 00:00 |
02:09:11.10 |
+34:53:05.7 |
HIP 10064 |
7.56 |
| 2026-08-11 12:00 |
02:09:09.59 |
+34:53:20.9 |
HIP 10064 |
7.54 |
| 2026-08-12 00:00 |
02:09:08.04 |
+34:53:35.9 |
HIP 10064 |
7.55 |
| 2026-08-12 12:00 |
02:09:06.45 |
+34:53:50.7 |
HIP 10064 |
7.60 |
| 2026-08-13 00:00 |
02:09:04.82 |
+34:54:05.3 |
HIP 10064 |
7.67 |
| 2026-08-13 12:00 |
02:09:03.16 |
+34:54:19.7 |
HIP 10064 |
7.77 |
| 2026-08-14 00:00 |
02:09:01.45 |
+34:54:34.0 |
HIP 10064 |
7.90 |
| 2026-08-14 12:00 |
02:08:59.71 |
+34:54:48.0 |
HIP 10064 |
8.06 |
| 2026-08-15 00:00 |
02:08:57.93 |
+34:55:01.8 |
HIP 10064 |
8.25 |
| 2026-08-15 12:00 |
02:08:56.11 |
+34:55:15.4 |
HIP 10064 |
8.46 |
| 2026-08-16 00:00 |
02:08:54.26 |
+34:55:28.8 |
HIP 10064 |
8.70 |
| 2026-08-16 12:00 |
02:08:52.36 |
+34:55:42.0 |
HIP 10064 |
8.96 |
| 2026-08-17 00:00 |
02:08:50.43 |
+34:55:55.0 |
HIP 10064 |
9.24 |
| 2026-08-17 12:00 |
02:08:48.46 |
+34:56:07.7 |
HIP 10064 |
9.55 |
| 2026-08-18 00:00 |
02:08:46.45 |
+34:56:20.3 |
HIP 10064 |
9.88 |
| 2026-08-18 12:00 |
02:08:44.40 |
+34:56:32.6 |
HIP 10064 |
10.22 |
| 2026-08-19 00:00 |
02:08:42.32 |
+34:56:44.8 |
HIP 10064 |
10.58 |