메타데이터
| 항목 |
값 |
| Designation |
C/2007 B2 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-08-20T20:11:20.682240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:03Z |
| Obs used |
1527 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
7.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-03-08.0000000 |
| e |
0.99596321 |
| q (au) |
2.974916 |
| a (au) |
736.951176 |
| i (deg) |
27.495297 |
| Ω (om, deg) |
14.868892 |
| ω (w, deg) |
205.997314 |
| M (ma, deg) |
359.991830 |
밝기
산란 + 전체 선형
$$
M_a = (12.353 + 2.105\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.353 |
| n |
2.105 |
| gf |
1.000 |
| gb |
-0.636 |
| 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) |
| 2026-03-26 00:00 |
00:35:20.39 |
+00:16:06.9 |
HIP 2982 |
40.49 |
| 2026-03-26 12:00 |
00:35:23.54 |
+00:16:29.1 |
HIP 2982 |
39.63 |
| 2026-03-27 00:00 |
00:35:26.70 |
+00:16:51.2 |
HIP 2982 |
38.77 |
| 2026-03-27 12:00 |
00:35:29.86 |
+00:17:13.4 |
HIP 2982 |
37.92 |
| 2026-03-28 00:00 |
00:35:33.03 |
+00:17:35.5 |
HIP 2982 |
37.06 |
| 2026-03-28 12:00 |
00:35:36.19 |
+00:17:57.6 |
HIP 2982 |
36.21 |
| 2026-03-29 00:00 |
00:35:39.35 |
+00:18:19.7 |
HIP 2982 |
35.36 |
| 2026-03-29 12:00 |
00:35:42.51 |
+00:18:41.7 |
HIP 2982 |
34.50 |
| 2026-03-30 00:00 |
00:35:45.68 |
+00:19:03.7 |
HIP 2982 |
33.65 |
| 2026-03-30 12:00 |
00:35:48.84 |
+00:19:25.7 |
HIP 2982 |
32.80 |
| 2026-03-31 00:00 |
00:35:52.00 |
+00:19:47.7 |
HIP 2982 |
31.95 |
| 2026-03-31 12:00 |
00:35:55.16 |
+00:20:09.7 |
HIP 2982 |
31.10 |
| 2026-04-01 00:00 |
00:35:58.33 |
+00:20:31.6 |
HIP 2982 |
30.26 |
| 2026-04-01 12:00 |
00:36:01.49 |
+00:20:53.5 |
HIP 2982 |
29.41 |
| 2026-04-02 00:00 |
00:36:04.65 |
+00:21:15.3 |
HIP 2982 |
28.57 |
| 2026-04-02 12:00 |
00:36:07.80 |
+00:21:37.1 |
HIP 2982 |
27.73 |
| 2026-04-03 00:00 |
00:36:10.96 |
+00:21:58.9 |
HIP 2982 |
26.89 |
| 2026-04-03 12:00 |
00:36:14.12 |
+00:22:20.6 |
HIP 2982 |
26.06 |
| 2026-04-04 00:00 |
00:36:17.27 |
+00:22:42.4 |
HIP 2982 |
25.23 |
| 2026-04-04 12:00 |
00:36:20.42 |
+00:23:04.0 |
HIP 2982 |
24.40 |
| 2026-04-05 00:00 |
00:36:23.57 |
+00:23:25.6 |
HIP 2982 |
23.57 |
| 2026-04-05 12:00 |
00:36:26.72 |
+00:23:47.2 |
HIP 2982 |
22.75 |
| 2026-04-06 00:00 |
00:36:29.86 |
+00:24:08.8 |
HIP 2982 |
21.93 |
| 2026-04-06 12:00 |
00:36:33.01 |
+00:24:30.3 |
HIP 2982 |
21.11 |
| 2026-04-07 00:00 |
00:36:36.15 |
+00:24:51.7 |
HIP 2982 |
20.30 |
| 2026-04-07 12:00 |
00:36:39.28 |
+00:25:13.2 |
HIP 2982 |
19.50 |
| 2026-04-08 00:00 |
00:36:42.41 |
+00:25:34.5 |
HIP 2982 |
18.70 |
| 2026-04-08 12:00 |
00:36:45.54 |
+00:25:55.8 |
HIP 2982 |
17.91 |
| 2026-04-09 00:00 |
00:36:48.67 |
+00:26:17.1 |
HIP 2982 |
17.13 |
| 2026-04-09 12:00 |
00:36:51.79 |
+00:26:38.3 |
HIP 2982 |
16.35 |
| 2026-04-10 00:00 |
00:36:54.91 |
+00:26:59.5 |
HIP 2982 |
15.58 |
| 2026-04-10 12:00 |
00:36:58.02 |
+00:27:20.6 |
HIP 2982 |
14.83 |
| 2026-04-11 00:00 |
00:37:01.13 |
+00:27:41.7 |
HIP 2982 |
14.08 |
| 2026-04-11 12:00 |
00:37:04.23 |
+00:28:02.7 |
HIP 2982 |
13.35 |
| 2026-04-12 00:00 |
00:37:07.33 |
+00:28:23.6 |
HIP 2982 |
12.64 |
| 2026-04-12 12:00 |
00:37:10.42 |
+00:28:44.5 |
HIP 2982 |
11.95 |
| 2026-04-13 00:00 |
00:37:13.51 |
+00:29:05.3 |
HIP 2982 |
11.27 |
| 2026-04-13 12:00 |
00:37:16.60 |
+00:29:26.1 |
HIP 2982 |
10.63 |
| 2026-04-14 00:00 |
00:37:19.67 |
+00:29:46.8 |
HIP 2982 |
10.01 |
| 2026-04-14 12:00 |
00:37:22.74 |
+00:30:07.4 |
HIP 2982 |
9.43 |
| 2026-04-15 00:00 |
00:37:25.81 |
+00:30:28.0 |
HIP 2982 |
8.90 |
| 2026-04-15 12:00 |
00:37:28.87 |
+00:30:48.5 |
HIP 2982 |
8.41 |
| 2026-04-16 00:00 |
00:37:31.92 |
+00:31:09.0 |
HIP 2982 |
7.98 |