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
$$
M_a = (5.575 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.575 |
| n |
6.000 |
| gf |
0.982 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.917 |
| 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) |
| 2026-06-01 00:00 |
03:14:06.77 |
-05:41:50.7 |
HIP 15128 |
20.06 |
| 2026-06-01 12:00 |
03:14:10.03 |
-05:41:49.4 |
HIP 15128 |
19.46 |
| 2026-06-02 00:00 |
03:14:13.28 |
-05:41:48.3 |
HIP 15128 |
18.88 |
| 2026-06-02 12:00 |
03:14:16.52 |
-05:41:47.4 |
HIP 15128 |
18.32 |
| 2026-06-03 00:00 |
03:14:19.75 |
-05:41:46.7 |
HIP 15128 |
17.78 |
| 2026-06-03 12:00 |
03:14:22.98 |
-05:41:46.2 |
HIP 15128 |
17.26 |
| 2026-06-04 00:00 |
03:14:26.19 |
-05:41:45.8 |
HIP 15128 |
16.77 |
| 2026-06-04 12:00 |
03:14:29.39 |
-05:41:45.7 |
HIP 15128 |
16.32 |
| 2026-06-05 00:00 |
03:14:32.59 |
-05:41:45.8 |
HIP 15128 |
15.89 |
| 2026-06-05 12:00 |
03:14:35.77 |
-05:41:46.1 |
HIP 15128 |
15.49 |
| 2026-06-06 00:00 |
03:14:38.94 |
-05:41:46.5 |
HIP 15128 |
15.13 |
| 2026-06-06 12:00 |
03:14:42.10 |
-05:41:47.2 |
HIP 15128 |
14.81 |
| 2026-06-07 00:00 |
03:14:45.25 |
-05:41:48.1 |
HIP 15128 |
14.53 |
| 2026-06-07 12:00 |
03:14:48.39 |
-05:41:49.1 |
HIP 15128 |
14.28 |
| 2026-06-08 00:00 |
03:14:51.52 |
-05:41:50.4 |
HIP 15128 |
14.09 |
| 2026-06-08 12:00 |
03:14:54.63 |
-05:41:51.9 |
HIP 15128 |
13.93 |
| 2026-06-09 00:00 |
03:14:57.74 |
-05:41:53.5 |
HIP 15128 |
13.82 |
| 2026-06-09 12:00 |
03:15:00.83 |
-05:41:55.4 |
HIP 15128 |
13.76 |
| 2026-06-10 00:00 |
03:15:03.91 |
-05:41:57.5 |
HIP 15128 |
13.75 |
| 2026-06-10 12:00 |
03:15:06.98 |
-05:41:59.7 |
HIP 15128 |
13.78 |
| 2026-06-11 00:00 |
03:15:10.04 |
-05:42:02.2 |
HIP 15128 |
13.85 |
| 2026-06-11 12:00 |
03:15:13.08 |
-05:42:04.8 |
HIP 15128 |
13.97 |
| 2026-06-12 00:00 |
03:15:16.11 |
-05:42:07.7 |
HIP 15128 |
14.14 |
| 2026-06-12 12:00 |
03:15:19.13 |
-05:42:10.8 |
HIP 15128 |
14.34 |
| 2026-06-13 00:00 |
03:15:22.13 |
-05:42:14.1 |
HIP 15211 |
14.10 |
| 2026-06-13 12:00 |
03:15:25.12 |
-05:42:17.5 |
HIP 15211 |
13.50 |
| 2026-06-14 00:00 |
03:15:28.10 |
-05:42:21.2 |
HIP 15211 |
12.91 |
| 2026-06-14 12:00 |
03:15:31.06 |
-05:42:25.1 |
HIP 15211 |
12.34 |
| 2026-06-15 00:00 |
03:15:34.01 |
-05:42:29.2 |
HIP 15211 |
11.79 |
| 2026-06-15 12:00 |
03:15:36.94 |
-05:42:33.5 |
HIP 15230 |
11.21 |
| 2026-06-16 00:00 |
03:15:39.86 |
-05:42:38.0 |
HIP 15230 |
10.48 |
| 2026-06-16 12:00 |
03:15:42.77 |
-05:42:42.6 |
HIP 15230 |
9.75 |
| 2026-06-17 00:00 |
03:15:45.66 |
-05:42:47.5 |
HIP 15230 |
9.03 |
| 2026-06-17 12:00 |
03:15:48.53 |
-05:42:52.6 |
HIP 15230 |
8.31 |
| 2026-06-18 00:00 |
03:15:51.39 |
-05:42:57.9 |
HIP 15230 |
7.59 |
| 2026-06-18 12:00 |
03:15:54.23 |
-05:43:03.4 |
HIP 15230 |
6.88 |
| 2026-06-19 00:00 |
03:15:57.06 |
-05:43:09.1 |
HIP 15230 |
6.17 |
| 2026-06-19 12:00 |
03:15:59.87 |
-05:43:15.0 |
HIP 15230 |
5.46 |
| 2026-06-20 00:00 |
03:16:02.67 |
-05:43:21.2 |
HIP 15230 |
4.76 |
| 2026-06-20 12:00 |
03:16:05.45 |
-05:43:27.5 |
HIP 15230 |
4.06 |
| 2026-06-21 00:00 |
03:16:08.21 |
-05:43:34.0 |
HIP 15230 |
3.37 |
| 2026-06-21 12:00 |
03:16:10.96 |
-05:43:40.7 |
HIP 15230 |
2.68 |
| 2026-06-22 00:00 |
03:16:13.68 |
-05:43:47.6 |
HIP 15230 |
2.00 |