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) |
| 2026-07-29 00:00 |
00:41:56.20 |
+00:56:51.5 |
HIP 3296 |
4.81 |
| 2026-07-29 12:00 |
00:41:55.05 |
+00:56:43.2 |
HIP 3296 |
5.04 |
| 2026-07-30 00:00 |
00:41:53.87 |
+00:56:34.6 |
HIP 3296 |
5.28 |
| 2026-07-30 12:00 |
00:41:52.67 |
+00:56:26.0 |
HIP 3296 |
5.53 |
| 2026-07-31 00:00 |
00:41:51.45 |
+00:56:17.2 |
HIP 3296 |
5.80 |
| 2026-07-31 12:00 |
00:41:50.21 |
+00:56:08.2 |
HIP 3296 |
6.08 |
| 2026-08-01 00:00 |
00:41:48.94 |
+00:55:59.2 |
HIP 3296 |
6.38 |
| 2026-08-01 12:00 |
00:41:47.64 |
+00:55:50.0 |
HIP 3296 |
6.68 |
| 2026-08-02 00:00 |
00:41:46.33 |
+00:55:40.6 |
HIP 3296 |
6.99 |
| 2026-08-02 12:00 |
00:41:44.99 |
+00:55:31.1 |
HIP 3296 |
7.31 |
| 2026-08-03 00:00 |
00:41:43.63 |
+00:55:21.5 |
HIP 3296 |
7.65 |
| 2026-08-03 12:00 |
00:41:42.24 |
+00:55:11.7 |
HIP 3296 |
7.99 |
| 2026-08-04 00:00 |
00:41:40.83 |
+00:55:01.8 |
HIP 3296 |
8.34 |
| 2026-08-04 12:00 |
00:41:39.40 |
+00:54:51.8 |
HIP 3296 |
8.70 |
| 2026-08-05 00:00 |
00:41:37.94 |
+00:54:41.7 |
HIP 3296 |
9.07 |
| 2026-08-05 12:00 |
00:41:36.47 |
+00:54:31.4 |
HIP 3296 |
9.44 |
| 2026-08-06 00:00 |
00:41:34.97 |
+00:54:20.9 |
HIP 3296 |
9.83 |
| 2026-08-06 12:00 |
00:41:33.45 |
+00:54:10.4 |
HIP 3296 |
10.22 |
| 2026-08-07 00:00 |
00:41:31.90 |
+00:53:59.7 |
HIP 3296 |
10.62 |
| 2026-08-07 12:00 |
00:41:30.33 |
+00:53:48.9 |
HIP 3296 |
11.03 |
| 2026-08-08 00:00 |
00:41:28.74 |
+00:53:38.0 |
HIP 3296 |
11.44 |
| 2026-08-08 12:00 |
00:41:27.13 |
+00:53:26.9 |
HIP 3296 |
11.86 |
| 2026-08-09 00:00 |
00:41:25.50 |
+00:53:15.7 |
HIP 3296 |
12.29 |
| 2026-08-09 12:00 |
00:41:23.84 |
+00:53:04.4 |
HIP 3296 |
12.73 |
| 2026-08-10 00:00 |
00:41:22.16 |
+00:52:52.9 |
HIP 3296 |
13.17 |
| 2026-08-10 12:00 |
00:41:20.46 |
+00:52:41.4 |
HIP 3296 |
13.62 |
| 2026-08-11 00:00 |
00:41:18.74 |
+00:52:29.7 |
HIP 3296 |
14.07 |
| 2026-08-11 12:00 |
00:41:17.00 |
+00:52:17.9 |
HIP 3296 |
14.53 |
| 2026-08-12 00:00 |
00:41:15.23 |
+00:52:05.9 |
HIP 3296 |
15.00 |
| 2026-08-12 12:00 |
00:41:13.45 |
+00:51:53.9 |
HIP 3296 |
15.48 |
| 2026-08-13 00:00 |
00:41:11.64 |
+00:51:41.7 |
HIP 3296 |
15.96 |
| 2026-08-13 12:00 |
00:41:09.81 |
+00:51:29.4 |
HIP 3296 |
16.45 |
| 2026-08-14 00:00 |
00:41:07.97 |
+00:51:17.0 |
HIP 3296 |
16.94 |
| 2026-08-14 12:00 |
00:41:06.10 |
+00:51:04.5 |
HIP 3296 |
17.44 |
| 2026-08-15 00:00 |
00:41:04.21 |
+00:50:51.9 |
HIP 3296 |
17.95 |
| 2026-08-15 12:00 |
00:41:02.30 |
+00:50:39.2 |
HIP 3296 |
18.46 |
| 2026-08-16 00:00 |
00:41:00.37 |
+00:50:26.3 |
HIP 3296 |
18.97 |
| 2026-08-16 12:00 |
00:40:58.42 |
+00:50:13.3 |
HIP 3296 |
19.50 |
| 2026-08-17 00:00 |
00:40:56.45 |
+00:50:00.3 |
HIP 3296 |
20.03 |
| 2026-08-17 12:00 |
00:40:54.46 |
+00:49:47.1 |
HIP 3296 |
20.56 |
| 2026-08-18 00:00 |
00:40:52.45 |
+00:49:33.8 |
HIP 3296 |
21.10 |
| 2026-08-18 12:00 |
00:40:50.42 |
+00:49:20.4 |
HIP 3296 |
21.64 |
| 2026-08-19 00:00 |
00:40:48.37 |
+00:49:06.9 |
HIP 3296 |
22.19 |