메타데이터
| 항목 |
값 |
| Designation |
C/2009 K4 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-06-19T09:14:16.163520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:30Z |
| Obs used |
125 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-06-09.0000000 |
| e |
0.96252699 |
| q (au) |
1.548875 |
| a (au) |
41.333073 |
| i (deg) |
34.824991 |
| Ω (om, deg) |
30.125128 |
| ω (w, deg) |
127.471471 |
| M (ma, deg) |
359.961482 |
밝기
산란 + 전체 선형
$$
M_a = (14.554 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.554 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| δ90 |
10.000 |
| 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) |
| 2026-05-12 00:00 |
22:40:45.18 |
-44:15:31.0 |
HIP 111958 |
16.61 |
| 2026-05-12 12:00 |
22:40:46.84 |
-44:15:54.6 |
HIP 111958 |
17.01 |
| 2026-05-13 00:00 |
22:40:48.47 |
-44:16:18.4 |
HIP 111958 |
17.42 |
| 2026-05-13 12:00 |
22:40:50.06 |
-44:16:42.5 |
HIP 111958 |
17.84 |
| 2026-05-14 00:00 |
22:40:51.61 |
-44:17:06.8 |
HIP 111958 |
18.27 |
| 2026-05-14 12:00 |
22:40:53.12 |
-44:17:31.3 |
HIP 111958 |
18.70 |
| 2026-05-15 00:00 |
22:40:54.60 |
-44:17:56.0 |
HIP 111958 |
19.13 |
| 2026-05-15 12:00 |
22:40:56.03 |
-44:18:20.9 |
HIP 112127 |
19.47 |
| 2026-05-16 00:00 |
22:40:57.43 |
-44:18:46.1 |
HIP 112127 |
19.30 |
| 2026-05-16 12:00 |
22:40:58.79 |
-44:19:11.5 |
HIP 112127 |
19.15 |
| 2026-05-17 00:00 |
22:41:00.11 |
-44:19:37.0 |
HIP 112127 |
19.02 |
| 2026-05-17 12:00 |
22:41:01.39 |
-44:20:02.8 |
HIP 112127 |
18.91 |
| 2026-05-18 00:00 |
22:41:02.64 |
-44:20:28.8 |
HIP 112127 |
18.82 |
| 2026-05-18 12:00 |
22:41:03.84 |
-44:20:55.0 |
HIP 112127 |
18.75 |
| 2026-05-19 00:00 |
22:41:05.01 |
-44:21:21.4 |
HIP 112127 |
18.70 |
| 2026-05-19 12:00 |
22:41:06.13 |
-44:21:48.0 |
HIP 112127 |
18.67 |
| 2026-05-20 00:00 |
22:41:07.22 |
-44:22:14.8 |
HIP 112127 |
18.66 |
| 2026-05-20 12:00 |
22:41:08.26 |
-44:22:41.8 |
HIP 112127 |
18.67 |
| 2026-05-21 00:00 |
22:41:09.27 |
-44:23:08.9 |
HIP 112127 |
18.70 |
| 2026-05-21 12:00 |
22:41:10.24 |
-44:23:36.3 |
HIP 112127 |
18.75 |
| 2026-05-22 00:00 |
22:41:11.17 |
-44:24:03.9 |
HIP 112127 |
18.82 |
| 2026-05-22 12:00 |
22:41:12.06 |
-44:24:31.6 |
HIP 112127 |
18.91 |
| 2026-05-23 00:00 |
22:41:12.91 |
-44:24:59.5 |
HIP 112127 |
19.03 |
| 2026-05-23 12:00 |
22:41:13.72 |
-44:25:27.7 |
HIP 112127 |
19.16 |
| 2026-05-24 00:00 |
22:41:14.49 |
-44:25:55.9 |
HIP 112127 |
19.31 |
| 2026-05-24 12:00 |
22:41:15.22 |
-44:26:24.4 |
HIP 112127 |
19.48 |
| 2026-05-25 00:00 |
22:41:15.91 |
-44:26:53.1 |
HIP 112127 |
19.66 |
| 2026-05-25 12:00 |
22:41:16.56 |
-44:27:21.9 |
HIP 112127 |
19.87 |
| 2026-05-26 00:00 |
22:41:17.18 |
-44:27:50.9 |
HIP 112127 |
20.09 |
| 2026-05-26 12:00 |
22:41:17.75 |
-44:28:20.0 |
HIP 112127 |
20.33 |
| 2026-05-27 00:00 |
22:41:18.28 |
-44:28:49.4 |
HIP 112127 |
20.59 |
| 2026-05-27 12:00 |
22:41:18.77 |
-44:29:18.8 |
HIP 112127 |
20.86 |
| 2026-05-28 00:00 |
22:41:19.22 |
-44:29:48.5 |
HIP 112127 |
21.14 |
| 2026-05-28 12:00 |
22:41:19.64 |
-44:30:18.3 |
HIP 112127 |
21.45 |
| 2026-05-29 00:00 |
22:41:20.01 |
-44:30:48.3 |
HIP 112127 |
21.76 |
| 2026-05-29 12:00 |
22:41:20.34 |
-44:31:18.4 |
HIP 112127 |
22.09 |
| 2026-05-30 00:00 |
22:41:20.63 |
-44:31:48.7 |
HIP 112127 |
22.43 |
| 2026-05-30 12:00 |
22:41:20.88 |
-44:32:19.1 |
HIP 112127 |
22.79 |
| 2026-05-31 00:00 |
22:41:21.10 |
-44:32:49.7 |
HIP 112127 |
23.16 |
| 2026-05-31 12:00 |
22:41:21.27 |
-44:33:20.4 |
HIP 112207 |
23.31 |
| 2026-06-01 00:00 |
22:41:21.40 |
-44:33:51.3 |
HIP 112207 |
23.27 |
| 2026-06-01 12:00 |
22:41:21.49 |
-44:34:22.3 |
HIP 112207 |
23.26 |
| 2026-06-02 00:00 |
22:41:21.54 |
-44:34:53.5 |
HIP 112207 |
23.26 |