메타데이터
| 항목 |
값 |
| Designation |
C/2008 G1 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-01-11T23:47:18.816000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:17Z |
| Obs used |
166 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-05-08.0000000 |
| e |
0.98907227 |
| q (au) |
3.989818 |
| a (au) |
365.109434 |
| i (deg) |
72.856095 |
| Ω (om, deg) |
215.916428 |
| ω (w, deg) |
63.704008 |
| M (ma, deg) |
359.964823 |
밝기
산란 + 전체 선형
$$
M_a = (5.574 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.574 |
| n |
6.000 |
| gf |
0.995 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.994 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
03:06:54.12 |
-06:09:38.3 |
HIP 14456 |
6.71 |
| 2026-03-26 12:00 |
03:06:56.69 |
-06:09:17.9 |
HIP 14456 |
7.01 |
| 2026-03-27 00:00 |
03:06:59.28 |
-06:08:57.6 |
HIP 14456 |
7.38 |
| 2026-03-27 12:00 |
03:07:01.88 |
-06:08:37.4 |
HIP 14456 |
7.80 |
| 2026-03-28 00:00 |
03:07:04.51 |
-06:08:17.2 |
HIP 14456 |
8.26 |
| 2026-03-28 12:00 |
03:07:07.15 |
-06:07:57.1 |
HIP 14456 |
8.77 |
| 2026-03-29 00:00 |
03:07:09.81 |
-06:07:37.0 |
HIP 14456 |
9.32 |
| 2026-03-29 12:00 |
03:07:12.49 |
-06:07:17.1 |
HIP 14456 |
9.89 |
| 2026-03-30 00:00 |
03:07:15.18 |
-06:06:57.2 |
HIP 14456 |
10.49 |
| 2026-03-30 12:00 |
03:07:17.89 |
-06:06:37.3 |
HIP 14456 |
11.12 |
| 2026-03-31 00:00 |
03:07:20.62 |
-06:06:17.6 |
HIP 14456 |
11.76 |
| 2026-03-31 12:00 |
03:07:23.37 |
-06:05:57.9 |
HIP 14456 |
12.42 |
| 2026-04-01 00:00 |
03:07:26.14 |
-06:05:38.3 |
HIP 14456 |
13.09 |
| 2026-04-01 12:00 |
03:07:28.92 |
-06:05:18.8 |
HIP 14456 |
13.78 |
| 2026-04-02 00:00 |
03:07:31.71 |
-06:04:59.3 |
HIP 14456 |
14.48 |
| 2026-04-02 12:00 |
03:07:34.53 |
-06:04:40.0 |
HIP 14456 |
15.19 |
| 2026-04-03 00:00 |
03:07:37.36 |
-06:04:20.7 |
HIP 14456 |
15.91 |
| 2026-04-03 12:00 |
03:07:40.20 |
-06:04:01.5 |
HIP 14456 |
16.64 |
| 2026-04-04 00:00 |
03:07:43.07 |
-06:03:42.3 |
HIP 14456 |
17.37 |
| 2026-04-04 12:00 |
03:07:45.94 |
-06:03:23.3 |
HIP 14546 |
17.39 |
| 2026-04-05 00:00 |
03:07:48.84 |
-06:03:04.4 |
HIP 14546 |
17.06 |
| 2026-04-05 12:00 |
03:07:51.74 |
-06:02:45.5 |
HIP 14546 |
16.76 |
| 2026-04-06 00:00 |
03:07:54.67 |
-06:02:26.7 |
HIP 14546 |
16.50 |
| 2026-04-06 12:00 |
03:07:57.61 |
-06:02:08.1 |
HIP 14546 |
16.27 |
| 2026-04-07 00:00 |
03:08:00.56 |
-06:01:49.5 |
HIP 14546 |
16.08 |
| 2026-04-07 12:00 |
03:08:03.52 |
-06:01:31.0 |
HIP 14546 |
15.93 |
| 2026-04-08 00:00 |
03:08:06.51 |
-06:01:12.6 |
HIP 14546 |
15.82 |
| 2026-04-08 12:00 |
03:08:09.50 |
-06:00:54.3 |
HIP 14546 |
15.75 |
| 2026-04-09 00:00 |
03:08:12.51 |
-06:00:36.1 |
HIP 14546 |
15.73 |
| 2026-04-09 12:00 |
03:08:15.53 |
-06:00:18.0 |
HIP 14546 |
15.75 |
| 2026-04-10 00:00 |
03:08:18.57 |
-06:00:00.0 |
HIP 14546 |
15.81 |
| 2026-04-10 12:00 |
03:08:21.62 |
-05:59:42.1 |
HIP 14546 |
15.92 |
| 2026-04-11 00:00 |
03:08:24.69 |
-05:59:24.3 |
HIP 14546 |
16.08 |
| 2026-04-11 12:00 |
03:08:27.76 |
-05:59:06.6 |
HIP 14546 |
16.28 |
| 2026-04-12 00:00 |
03:08:30.85 |
-05:58:49.0 |
HIP 14546 |
16.52 |
| 2026-04-12 12:00 |
03:08:33.95 |
-05:58:31.6 |
HIP 14546 |
16.80 |
| 2026-04-13 00:00 |
03:08:37.07 |
-05:58:14.2 |
HIP 14546 |
17.11 |
| 2026-04-13 12:00 |
03:08:40.19 |
-05:57:57.0 |
HIP 14546 |
17.47 |
| 2026-04-14 00:00 |
03:08:43.33 |
-05:57:39.8 |
HIP 14546 |
17.86 |
| 2026-04-14 12:00 |
03:08:46.48 |
-05:57:22.8 |
HIP 14546 |
18.28 |
| 2026-04-15 00:00 |
03:08:49.64 |
-05:57:05.9 |
HIP 14546 |
18.73 |
| 2026-04-15 12:00 |
03:08:52.81 |
-05:56:49.1 |
HIP 14546 |
19.22 |
| 2026-04-16 00:00 |
03:08:56.00 |
-05:56:32.4 |
HIP 14546 |
19.73 |