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) |
| 2026-09-20 00:00 |
00:38:05.44 |
+00:32:05.3 |
HIP 2982 |
6.18 |
| 2026-09-20 12:00 |
00:38:02.54 |
+00:31:47.9 |
HIP 2982 |
5.70 |
| 2026-09-21 00:00 |
00:37:59.64 |
+00:31:30.5 |
HIP 2982 |
5.28 |
| 2026-09-21 12:00 |
00:37:56.72 |
+00:31:13.0 |
HIP 2982 |
4.96 |
| 2026-09-22 00:00 |
00:37:53.81 |
+00:30:55.5 |
HIP 2982 |
4.74 |
| 2026-09-22 12:00 |
00:37:50.88 |
+00:30:38.1 |
HIP 2982 |
4.65 |
| 2026-09-23 00:00 |
00:37:47.96 |
+00:30:20.6 |
HIP 2982 |
4.69 |
| 2026-09-23 12:00 |
00:37:45.02 |
+00:30:03.1 |
HIP 2982 |
4.86 |
| 2026-09-24 00:00 |
00:37:42.09 |
+00:29:45.6 |
HIP 2982 |
5.14 |
| 2026-09-24 12:00 |
00:37:39.15 |
+00:29:28.2 |
HIP 2982 |
5.53 |
| 2026-09-25 00:00 |
00:37:36.20 |
+00:29:10.7 |
HIP 2982 |
6.00 |
| 2026-09-25 12:00 |
00:37:33.25 |
+00:28:53.2 |
HIP 2982 |
6.53 |
| 2026-09-26 00:00 |
00:37:30.30 |
+00:28:35.7 |
HIP 2982 |
7.11 |
| 2026-09-26 12:00 |
00:37:27.35 |
+00:28:18.3 |
HIP 2982 |
7.73 |
| 2026-09-27 00:00 |
00:37:24.39 |
+00:28:00.8 |
HIP 2982 |
8.38 |
| 2026-09-27 12:00 |
00:37:21.43 |
+00:27:43.4 |
HIP 2982 |
9.05 |
| 2026-09-28 00:00 |
00:37:18.46 |
+00:27:25.9 |
HIP 2982 |
9.75 |
| 2026-09-28 12:00 |
00:37:15.49 |
+00:27:08.5 |
HIP 2982 |
10.46 |
| 2026-09-29 00:00 |
00:37:12.53 |
+00:26:51.1 |
HIP 2982 |
11.18 |
| 2026-09-29 12:00 |
00:37:09.56 |
+00:26:33.7 |
HIP 2982 |
11.91 |
| 2026-09-30 00:00 |
00:37:06.58 |
+00:26:16.3 |
HIP 2982 |
12.65 |
| 2026-09-30 12:00 |
00:37:03.61 |
+00:25:58.9 |
HIP 2982 |
13.39 |
| 2026-10-01 00:00 |
00:37:00.63 |
+00:25:41.5 |
HIP 2982 |
14.15 |
| 2026-10-01 12:00 |
00:36:57.66 |
+00:25:24.2 |
HIP 2982 |
14.90 |
| 2026-10-02 00:00 |
00:36:54.68 |
+00:25:06.9 |
HIP 2982 |
15.66 |
| 2026-10-02 12:00 |
00:36:51.70 |
+00:24:49.6 |
HIP 2982 |
16.43 |
| 2026-10-03 00:00 |
00:36:48.73 |
+00:24:32.3 |
HIP 2982 |
17.20 |
| 2026-10-03 12:00 |
00:36:45.75 |
+00:24:15.1 |
HIP 2982 |
17.97 |
| 2026-10-04 00:00 |
00:36:42.77 |
+00:23:57.9 |
HIP 2982 |
18.74 |
| 2026-10-04 12:00 |
00:36:39.79 |
+00:23:40.7 |
HIP 2982 |
19.52 |
| 2026-10-05 00:00 |
00:36:36.82 |
+00:23:23.6 |
HIP 2982 |
20.29 |
| 2026-10-05 12:00 |
00:36:33.84 |
+00:23:06.4 |
HIP 2982 |
21.07 |
| 2026-10-06 00:00 |
00:36:30.87 |
+00:22:49.3 |
HIP 2982 |
21.85 |
| 2026-10-06 12:00 |
00:36:27.89 |
+00:22:32.3 |
HIP 2982 |
22.63 |
| 2026-10-07 00:00 |
00:36:24.92 |
+00:22:15.3 |
HIP 2982 |
23.41 |
| 2026-10-07 12:00 |
00:36:21.95 |
+00:21:58.3 |
HIP 2982 |
24.19 |
| 2026-10-08 00:00 |
00:36:18.99 |
+00:21:41.4 |
HIP 2982 |
24.97 |
| 2026-10-08 12:00 |
00:36:16.02 |
+00:21:24.5 |
HIP 2982 |
25.75 |
| 2026-10-09 00:00 |
00:36:13.06 |
+00:21:07.7 |
HIP 2982 |
26.53 |
| 2026-10-09 12:00 |
00:36:10.10 |
+00:20:50.9 |
HIP 2982 |
27.31 |
| 2026-10-10 00:00 |
00:36:07.15 |
+00:20:34.1 |
HIP 2982 |
28.09 |
| 2026-10-10 12:00 |
00:36:04.20 |
+00:20:17.4 |
HIP 2982 |
28.87 |
| 2026-10-11 00:00 |
00:36:01.25 |
+00:20:00.8 |
HIP 2982 |
29.65 |