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) |
| 2026-05-12 00:00 |
00:39:56.88 |
+00:46:51.8 |
HIP 3055 |
19.84 |
| 2026-05-12 12:00 |
00:39:59.33 |
+00:47:07.1 |
HIP 3055 |
20.25 |
| 2026-05-13 00:00 |
00:40:01.75 |
+00:47:22.4 |
HIP 3055 |
20.67 |
| 2026-05-13 12:00 |
00:40:04.16 |
+00:47:37.5 |
HIP 3055 |
21.10 |
| 2026-05-14 00:00 |
00:40:06.55 |
+00:47:52.5 |
HIP 3055 |
21.53 |
| 2026-05-14 12:00 |
00:40:08.93 |
+00:48:07.3 |
HIP 3055 |
21.97 |
| 2026-05-15 00:00 |
00:40:11.29 |
+00:48:22.1 |
HIP 3055 |
22.42 |
| 2026-05-15 12:00 |
00:40:13.63 |
+00:48:36.7 |
HIP 3055 |
22.88 |
| 2026-05-16 00:00 |
00:40:15.96 |
+00:48:51.2 |
HIP 3055 |
23.34 |
| 2026-05-16 12:00 |
00:40:18.27 |
+00:49:05.5 |
HIP 3055 |
23.81 |
| 2026-05-17 00:00 |
00:40:20.56 |
+00:49:19.7 |
HIP 3055 |
24.27 |
| 2026-05-17 12:00 |
00:40:22.84 |
+00:49:33.8 |
HIP 3055 |
24.75 |
| 2026-05-18 00:00 |
00:40:25.09 |
+00:49:47.8 |
HIP 3055 |
25.22 |
| 2026-05-18 12:00 |
00:40:27.33 |
+00:50:01.6 |
HIP 3055 |
25.70 |
| 2026-05-19 00:00 |
00:40:29.55 |
+00:50:15.3 |
HIP 3296 |
25.73 |
| 2026-05-19 12:00 |
00:40:31.75 |
+00:50:28.9 |
HIP 3296 |
25.13 |
| 2026-05-20 00:00 |
00:40:33.94 |
+00:50:42.3 |
HIP 3296 |
24.54 |
| 2026-05-20 12:00 |
00:40:36.10 |
+00:50:55.6 |
HIP 3296 |
23.96 |
| 2026-05-21 00:00 |
00:40:38.25 |
+00:51:08.7 |
HIP 3296 |
23.38 |
| 2026-05-21 12:00 |
00:40:40.38 |
+00:51:21.8 |
HIP 3296 |
22.81 |
| 2026-05-22 00:00 |
00:40:42.49 |
+00:51:34.6 |
HIP 3296 |
22.24 |
| 2026-05-22 12:00 |
00:40:44.58 |
+00:51:47.4 |
HIP 3296 |
21.68 |
| 2026-05-23 00:00 |
00:40:46.65 |
+00:52:00.0 |
HIP 3296 |
21.12 |
| 2026-05-23 12:00 |
00:40:48.70 |
+00:52:12.5 |
HIP 3296 |
20.57 |
| 2026-05-24 00:00 |
00:40:50.74 |
+00:52:24.8 |
HIP 3296 |
20.02 |
| 2026-05-24 12:00 |
00:40:52.75 |
+00:52:37.0 |
HIP 3296 |
19.48 |
| 2026-05-25 00:00 |
00:40:54.74 |
+00:52:49.0 |
HIP 3296 |
18.94 |
| 2026-05-25 12:00 |
00:40:56.72 |
+00:53:01.0 |
HIP 3296 |
18.41 |
| 2026-05-26 00:00 |
00:40:58.67 |
+00:53:12.7 |
HIP 3296 |
17.89 |
| 2026-05-26 12:00 |
00:41:00.61 |
+00:53:24.4 |
HIP 3296 |
17.37 |
| 2026-05-27 00:00 |
00:41:02.52 |
+00:53:35.8 |
HIP 3296 |
16.86 |
| 2026-05-27 12:00 |
00:41:04.42 |
+00:53:47.2 |
HIP 3296 |
16.35 |
| 2026-05-28 00:00 |
00:41:06.29 |
+00:53:58.4 |
HIP 3296 |
15.85 |
| 2026-05-28 12:00 |
00:41:08.15 |
+00:54:09.4 |
HIP 3296 |
15.35 |
| 2026-05-29 00:00 |
00:41:09.98 |
+00:54:20.3 |
HIP 3296 |
14.86 |
| 2026-05-29 12:00 |
00:41:11.79 |
+00:54:31.1 |
HIP 3296 |
14.38 |
| 2026-05-30 00:00 |
00:41:13.59 |
+00:54:41.7 |
HIP 3296 |
13.90 |
| 2026-05-30 12:00 |
00:41:15.36 |
+00:54:52.2 |
HIP 3296 |
13.43 |
| 2026-05-31 00:00 |
00:41:17.11 |
+00:55:02.5 |
HIP 3296 |
12.97 |
| 2026-05-31 12:00 |
00:41:18.84 |
+00:55:12.7 |
HIP 3296 |
12.51 |
| 2026-06-01 00:00 |
00:41:20.55 |
+00:55:22.7 |
HIP 3296 |
12.05 |
| 2026-06-01 12:00 |
00:41:22.24 |
+00:55:32.6 |
HIP 3296 |
11.60 |
| 2026-06-02 00:00 |
00:41:23.90 |
+00:55:42.4 |
HIP 3296 |
11.16 |