메타데이터
| 항목 |
값 |
| Designation |
P/2007 K2 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-06-08T10:37:30.066240Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:42:56Z |
| Obs used |
58 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-05-18.0000000 |
| e |
0.68500895 |
| q (au) |
2.268935 |
| a (au) |
7.203173 |
| i (deg) |
7.619939 |
| Ω (om, deg) |
189.849241 |
| ω (w, deg) |
345.679250 |
| M (ma, deg) |
358.906804 |
밝기
산란 + 전체 선형
$$
M_a = (12.449 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.449 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.978 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
06:02:23.89 |
+17:13:21.1 |
HIP 28556 |
20.27 |
| 2026-05-12 12:00 |
06:03:03.93 |
+17:13:49.8 |
HIP 28647 |
26.16 |
| 2026-05-13 00:00 |
06:03:44.09 |
+17:14:17.5 |
HIP 28647 |
27.99 |
| 2026-05-13 12:00 |
06:04:24.40 |
+17:14:44.5 |
HIP 28710 |
31.94 |
| 2026-05-14 00:00 |
06:05:04.83 |
+17:15:10.5 |
HIP 28802 |
35.74 |
| 2026-05-14 12:00 |
06:05:45.39 |
+17:15:35.8 |
HIP 28802 |
38.29 |
| 2026-05-15 00:00 |
06:06:26.09 |
+17:16:00.1 |
HIP 28802 |
42.94 |
| 2026-05-15 12:00 |
06:07:06.91 |
+17:16:23.6 |
HIP 29186 |
33.45 |
| 2026-05-16 00:00 |
06:07:47.86 |
+17:16:46.3 |
HIP 29186 |
23.94 |
| 2026-05-16 12:00 |
06:08:28.94 |
+17:17:08.0 |
HIP 29186 |
14.76 |
| 2026-05-17 00:00 |
06:09:10.15 |
+17:17:28.9 |
HIP 29186 |
7.41 |
| 2026-05-17 12:00 |
06:09:51.49 |
+17:17:48.8 |
HIP 29186 |
9.27 |
| 2026-05-18 00:00 |
06:10:32.94 |
+17:18:07.9 |
HIP 29186 |
17.68 |
| 2026-05-18 12:00 |
06:11:14.53 |
+17:18:26.1 |
HIP 29186 |
27.15 |
| 2026-05-19 00:00 |
06:11:56.23 |
+17:18:43.3 |
HIP 29430 |
27.35 |
| 2026-05-19 12:00 |
06:12:38.06 |
+17:18:59.7 |
HIP 29591 |
25.67 |
| 2026-05-20 00:00 |
06:13:20.01 |
+17:19:15.1 |
HIP 29591 |
17.95 |
| 2026-05-20 12:00 |
06:14:02.08 |
+17:19:29.6 |
HIP 29591 |
13.63 |
| 2026-05-21 00:00 |
06:14:44.27 |
+17:19:43.2 |
HIP 29591 |
15.85 |
| 2026-05-21 12:00 |
06:15:26.58 |
+17:19:55.8 |
HIP 29798 |
16.38 |
| 2026-05-22 00:00 |
06:16:09.00 |
+17:20:07.5 |
HIP 29798 |
9.88 |
| 2026-05-22 12:00 |
06:16:51.54 |
+17:20:18.3 |
HIP 29828 |
6.01 |
| 2026-05-23 00:00 |
06:17:34.20 |
+17:20:28.1 |
HIP 29828 |
11.46 |
| 2026-05-23 12:00 |
06:18:16.97 |
+17:20:37.0 |
HIP 30019 |
10.77 |
| 2026-05-24 00:00 |
06:18:59.86 |
+17:20:44.9 |
HIP 30019 |
1.32 |
| 2026-05-24 12:00 |
06:19:42.86 |
+17:20:51.9 |
HIP 30019 |
9.88 |
| 2026-05-25 00:00 |
06:20:25.97 |
+17:20:57.9 |
HIP 30220 |
15.09 |
| 2026-05-25 12:00 |
06:21:09.20 |
+17:21:02.9 |
HIP 30220 |
5.54 |
| 2026-05-26 00:00 |
06:21:52.53 |
+17:21:07.0 |
HIP 30220 |
6.84 |
| 2026-05-26 12:00 |
06:22:35.98 |
+17:21:10.1 |
HIP 30293 |
12.57 |
| 2026-05-27 00:00 |
06:23:19.54 |
+17:21:12.2 |
HIP 30333 |
15.04 |
| 2026-05-27 12:00 |
06:24:03.20 |
+17:21:13.3 |
HIP 30400 |
19.32 |
| 2026-05-28 00:00 |
06:24:46.98 |
+17:21:13.4 |
HIP 30612 |
19.81 |
| 2026-05-28 12:00 |
06:25:30.86 |
+17:21:12.6 |
HIP 30612 |
11.72 |
| 2026-05-29 00:00 |
06:26:14.85 |
+17:21:10.7 |
HIP 30612 |
10.09 |
| 2026-05-29 12:00 |
06:26:58.94 |
+17:21:07.8 |
HIP 30687 |
6.04 |
| 2026-05-30 00:00 |
06:27:43.15 |
+17:21:04.0 |
HIP 30687 |
12.96 |
| 2026-05-30 12:00 |
06:28:27.45 |
+17:20:59.1 |
HIP 30900 |
13.36 |
| 2026-05-31 00:00 |
06:29:11.87 |
+17:20:53.2 |
HIP 30900 |
8.93 |
| 2026-05-31 12:00 |
06:29:56.38 |
+17:20:46.3 |
HIP 30900 |
14.36 |
| 2026-06-01 00:00 |
06:30:41.00 |
+17:20:38.4 |
HIP 30954 |
20.77 |
| 2026-06-01 12:00 |
06:31:25.73 |
+17:20:29.4 |
HIP 30954 |
28.46 |
| 2026-06-02 00:00 |
06:32:10.55 |
+17:20:19.4 |
HIP 31156 |
26.51 |