C/2007 H2 (Skiff)
메타데이터
| 항목 |
값 |
| Designation |
C/2007 H2 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-02-17T01:18:40.541760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:06Z |
| Obs used |
109 |
| NEO |
- |
| M1 |
18.300 |
| K1 |
6.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-04-24.0000000 |
| e |
0.97167863 |
| q (au) |
1.410452 |
| a (au) |
49.801695 |
| i (deg) |
52.190808 |
| Ω (om, deg) |
203.771836 |
| ω (w, deg) |
319.302431 |
| M (ma, deg) |
0.184936 |
밝기
산란 + 전체 선형
$$
M_a = (18.200 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
18.200 |
| n |
2.000 |
| gf |
0.996 |
| gb |
-0.626 |
| k |
0.990 |
| 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) |
| 2026-02-03 00:00 |
21:29:04.35 |
+29:40:56.7 |
HIP 106155 |
18.56 |
| 2026-02-03 12:00 |
21:29:08.17 |
+29:41:03.8 |
HIP 106155 |
17.88 |
| 2026-02-04 00:00 |
21:29:11.98 |
+29:41:11.3 |
HIP 106155 |
17.20 |
| 2026-02-04 12:00 |
21:29:15.80 |
+29:41:19.1 |
HIP 106155 |
16.53 |
| 2026-02-05 00:00 |
21:29:19.62 |
+29:41:27.2 |
HIP 106155 |
15.87 |
| 2026-02-05 12:00 |
21:29:23.45 |
+29:41:35.6 |
HIP 106155 |
15.23 |
| 2026-02-06 00:00 |
21:29:27.27 |
+29:41:44.3 |
HIP 106155 |
14.61 |
| 2026-02-06 12:00 |
21:29:31.10 |
+29:41:53.4 |
HIP 106155 |
14.00 |
| 2026-02-07 00:00 |
21:29:34.93 |
+29:42:02.7 |
HIP 106155 |
13.41 |
| 2026-02-07 12:00 |
21:29:38.75 |
+29:42:12.3 |
HIP 106155 |
12.85 |
| 2026-02-08 00:00 |
21:29:42.58 |
+29:42:22.2 |
HIP 106155 |
12.32 |
| 2026-02-08 12:00 |
21:29:46.41 |
+29:42:32.4 |
HIP 106155 |
11.82 |
| 2026-02-09 00:00 |
21:29:50.24 |
+29:42:42.9 |
HIP 106155 |
11.35 |
| 2026-02-09 12:00 |
21:29:54.07 |
+29:42:53.7 |
HIP 106155 |
10.93 |
| 2026-02-10 00:00 |
21:29:57.89 |
+29:43:04.8 |
HIP 106155 |
10.55 |
| 2026-02-10 12:00 |
21:30:01.72 |
+29:43:16.2 |
HIP 106155 |
10.23 |
| 2026-02-11 00:00 |
21:30:05.54 |
+29:43:27.9 |
HIP 106155 |
9.96 |
| 2026-02-11 12:00 |
21:30:09.37 |
+29:43:39.9 |
HIP 106155 |
9.76 |
| 2026-02-12 00:00 |
21:30:13.19 |
+29:43:52.2 |
HIP 106155 |
9.62 |
| 2026-02-12 12:00 |
21:30:17.01 |
+29:44:04.8 |
HIP 106155 |
9.55 |
| 2026-02-13 00:00 |
21:30:20.83 |
+29:44:17.7 |
HIP 106155 |
9.56 |
| 2026-02-13 12:00 |
21:30:24.65 |
+29:44:30.8 |
HIP 106155 |
9.63 |
| 2026-02-14 00:00 |
21:30:28.46 |
+29:44:44.3 |
HIP 106155 |
9.78 |
| 2026-02-14 12:00 |
21:30:32.27 |
+29:44:58.0 |
HIP 106155 |
9.99 |
| 2026-02-15 00:00 |
21:30:36.08 |
+29:45:12.1 |
HIP 106155 |
10.27 |
| 2026-02-15 12:00 |
21:30:39.88 |
+29:45:26.4 |
HIP 106155 |
10.60 |
| 2026-02-16 00:00 |
21:30:43.68 |
+29:45:41.0 |
HIP 106155 |
10.99 |
| 2026-02-16 12:00 |
21:30:47.48 |
+29:45:55.9 |
HIP 106155 |
11.42 |
| 2026-02-17 00:00 |
21:30:51.27 |
+29:46:11.0 |
HIP 106155 |
11.90 |
| 2026-02-17 12:00 |
21:30:55.06 |
+29:46:26.5 |
HIP 106155 |
12.42 |
| 2026-02-18 00:00 |
21:30:58.84 |
+29:46:42.2 |
HIP 106155 |
12.96 |
| 2026-02-18 12:00 |
21:31:02.62 |
+29:46:58.2 |
HIP 106155 |
13.54 |
| 2026-02-19 00:00 |
21:31:06.40 |
+29:47:14.5 |
HIP 106155 |
14.15 |
| 2026-02-19 12:00 |
21:31:10.16 |
+29:47:31.1 |
HIP 106155 |
14.77 |
| 2026-02-20 00:00 |
21:31:13.92 |
+29:47:47.9 |
HIP 106155 |
15.42 |
| 2026-02-20 12:00 |
21:31:17.68 |
+29:48:05.0 |
HIP 106155 |
16.08 |
| 2026-02-21 00:00 |
21:31:21.43 |
+29:48:22.4 |
HIP 106155 |
16.76 |
| 2026-02-21 12:00 |
21:31:25.17 |
+29:48:40.1 |
HIP 106155 |
17.46 |
| 2026-02-22 00:00 |
21:31:28.91 |
+29:48:58.0 |
HIP 106155 |
18.16 |
| 2026-02-22 12:00 |
21:31:32.64 |
+29:49:16.2 |
HIP 106155 |
18.88 |
| 2026-02-23 00:00 |
21:31:36.36 |
+29:49:34.6 |
HIP 106155 |
19.60 |
| 2026-02-23 12:00 |
21:31:40.07 |
+29:49:53.3 |
HIP 106233 |
19.83 |
| 2026-02-24 00:00 |
21:31:43.78 |
+29:50:12.3 |
HIP 106233 |
19.89 |