| Parameter |
Value |
| Designation |
C/2007 T5 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-05-24T05:40:47.795520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:13Z |
| Obs used |
285 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-01-26.0000000 |
| e |
0.91362737 |
| q (au) |
4.049258 |
| a (au) |
46.881263 |
| i (deg) |
45.615235 |
| Ω (om, deg) |
109.843075 |
| ω (w, deg) |
34.416471 |
| M (ma, deg) |
359.633887 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.741 + 2.562\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.741 |
| n |
2.562 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-03-26 00:00 |
19:33:10.75 |
-21:43:36.8 |
HIP 96096 |
17.94 |
| 2026-03-26 12:00 |
19:33:12.19 |
-21:43:37.3 |
HIP 96096 |
18.19 |
| 2026-03-27 00:00 |
19:33:13.61 |
-21:43:37.7 |
HIP 96096 |
18.43 |
| 2026-03-27 12:00 |
19:33:14.99 |
-21:43:38.3 |
HIP 96096 |
18.67 |
| 2026-03-28 00:00 |
19:33:16.33 |
-21:43:38.9 |
HIP 96096 |
18.91 |
| 2026-03-28 12:00 |
19:33:17.65 |
-21:43:39.7 |
HIP 96096 |
19.15 |
| 2026-03-29 00:00 |
19:33:18.93 |
-21:43:40.4 |
HIP 96096 |
19.38 |
| 2026-03-29 12:00 |
19:33:20.18 |
-21:43:41.3 |
HIP 96096 |
19.61 |
| 2026-03-30 00:00 |
19:33:21.40 |
-21:43:42.2 |
HIP 96096 |
19.84 |
| 2026-03-30 12:00 |
19:33:22.58 |
-21:43:43.2 |
HIP 96096 |
20.06 |
| 2026-03-31 00:00 |
19:33:23.73 |
-21:43:44.3 |
HIP 96096 |
20.28 |
| 2026-03-31 12:00 |
19:33:24.85 |
-21:43:45.5 |
HIP 96096 |
20.49 |
| 2026-04-01 00:00 |
19:33:25.94 |
-21:43:46.7 |
HIP 96096 |
20.70 |
| 2026-04-01 12:00 |
19:33:26.99 |
-21:43:48.0 |
HIP 96096 |
20.91 |
| 2026-04-02 00:00 |
19:33:28.01 |
-21:43:49.4 |
HIP 96096 |
21.11 |
| 2026-04-02 12:00 |
19:33:28.99 |
-21:43:50.8 |
HIP 96096 |
21.31 |
| 2026-04-03 00:00 |
19:33:29.95 |
-21:43:52.4 |
HIP 96096 |
21.50 |
| 2026-04-03 12:00 |
19:33:30.86 |
-21:43:54.0 |
HIP 96096 |
21.69 |
| 2026-04-04 00:00 |
19:33:31.75 |
-21:43:55.6 |
HIP 96096 |
21.87 |
| 2026-04-04 12:00 |
19:33:32.60 |
-21:43:57.4 |
HIP 96096 |
22.05 |
| 2026-04-05 00:00 |
19:33:33.42 |
-21:43:59.2 |
HIP 96096 |
22.22 |
| 2026-04-05 12:00 |
19:33:34.21 |
-21:44:01.1 |
HIP 96096 |
22.39 |
| 2026-04-06 00:00 |
19:33:34.96 |
-21:44:03.1 |
HIP 96096 |
22.55 |
| 2026-04-06 12:00 |
19:33:35.67 |
-21:44:05.2 |
HIP 96096 |
22.70 |
| 2026-04-07 00:00 |
19:33:36.36 |
-21:44:07.3 |
HIP 96096 |
22.86 |
| 2026-04-07 12:00 |
19:33:37.01 |
-21:44:09.5 |
HIP 96096 |
23.00 |
| 2026-04-08 00:00 |
19:33:37.62 |
-21:44:11.8 |
HIP 96233 |
23.12 |
| 2026-04-08 12:00 |
19:33:38.21 |
-21:44:14.2 |
HIP 96233 |
23.05 |
| 2026-04-09 00:00 |
19:33:38.75 |
-21:44:16.6 |
HIP 96233 |
22.97 |
| 2026-04-09 12:00 |
19:33:39.27 |
-21:44:19.1 |
HIP 96233 |
22.90 |
| 2026-04-10 00:00 |
19:33:39.75 |
-21:44:21.7 |
HIP 96233 |
22.82 |
| 2026-04-10 12:00 |
19:33:40.20 |
-21:44:24.4 |
HIP 96233 |
22.75 |
| 2026-04-11 00:00 |
19:33:40.61 |
-21:44:27.2 |
HIP 96233 |
22.68 |
| 2026-04-11 12:00 |
19:33:40.99 |
-21:44:30.0 |
HIP 96233 |
22.61 |
| 2026-04-12 00:00 |
19:33:41.33 |
-21:44:32.9 |
HIP 96233 |
22.54 |
| 2026-04-12 12:00 |
19:33:41.64 |
-21:44:35.9 |
HIP 96233 |
22.48 |
| 2026-04-13 00:00 |
19:33:41.91 |
-21:44:39.0 |
HIP 96233 |
22.41 |
| 2026-04-13 12:00 |
19:33:42.16 |
-21:44:42.1 |
HIP 96233 |
22.35 |
| 2026-04-14 00:00 |
19:33:42.36 |
-21:44:45.3 |
HIP 96233 |
22.28 |
| 2026-04-14 12:00 |
19:33:42.53 |
-21:44:48.6 |
HIP 96233 |
22.22 |
| 2026-04-15 00:00 |
19:33:42.67 |
-21:44:52.0 |
HIP 96233 |
22.15 |
| 2026-04-15 12:00 |
19:33:42.78 |
-21:44:55.5 |
HIP 96233 |
22.09 |
| 2026-04-16 00:00 |
19:33:42.85 |
-21:44:59.0 |
HIP 96233 |
22.03 |