메타데이터
| 항목 |
값 |
| Designation |
P/2009 B1 (Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-02-06T04:48:47.580480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:28Z |
| Obs used |
111 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-01-31.0000000 |
| e |
0.63719062 |
| q (au) |
2.426592 |
| a (au) |
6.688339 |
| i (deg) |
22.228478 |
| Ω (om, deg) |
297.438307 |
| ω (w, deg) |
128.593842 |
| M (ma, deg) |
359.646689 |
밝기
산란 + 전체 선형
$$
M_a = (11.341 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.341 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.902 |
| δ90 |
1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
02:58:38.87 |
+32:07:32.0 |
HIP 13851 |
20.55 |
| 2026-05-12 12:00 |
02:59:49.67 |
+32:10:50.4 |
HIP 14067 |
22.72 |
| 2026-05-13 00:00 |
03:01:00.55 |
+32:14:07.2 |
HIP 14081 |
12.23 |
| 2026-05-13 12:00 |
03:02:11.51 |
+32:17:22.7 |
HIP 14081 |
11.62 |
| 2026-05-14 00:00 |
03:03:22.56 |
+32:20:36.7 |
HIP 14081 |
24.32 |
| 2026-05-14 12:00 |
03:04:33.69 |
+32:23:49.2 |
HIP 14370 |
20.83 |
| 2026-05-15 00:00 |
03:05:44.90 |
+32:27:00.3 |
HIP 14491 |
21.59 |
| 2026-05-15 12:00 |
03:06:56.20 |
+32:30:09.9 |
HIP 14491 |
9.87 |
| 2026-05-16 00:00 |
03:08:07.57 |
+32:33:17.9 |
HIP 14491 |
14.16 |
| 2026-05-16 12:00 |
03:09:19.03 |
+32:36:24.5 |
HIP 14681 |
8.69 |
| 2026-05-17 00:00 |
03:10:30.56 |
+32:39:29.5 |
HIP 14681 |
14.94 |
| 2026-05-17 12:00 |
03:11:42.16 |
+32:42:33.0 |
HIP 14924 |
16.61 |
| 2026-05-18 00:00 |
03:12:53.85 |
+32:45:34.9 |
HIP 14976 |
8.42 |
| 2026-05-18 12:00 |
03:14:05.60 |
+32:48:35.3 |
HIP 15102 |
12.76 |
| 2026-05-19 00:00 |
03:15:17.43 |
+32:51:34.1 |
HIP 15191 |
6.24 |
| 2026-05-19 12:00 |
03:16:29.33 |
+32:54:31.3 |
HIP 15191 |
9.39 |
| 2026-05-20 00:00 |
03:17:41.30 |
+32:57:26.9 |
HIP 15406 |
21.18 |
| 2026-05-20 12:00 |
03:18:53.34 |
+33:00:20.9 |
HIP 15447 |
19.63 |
| 2026-05-21 00:00 |
03:20:05.45 |
+33:03:13.2 |
HIP 15609 |
15.00 |
| 2026-05-21 12:00 |
03:21:17.63 |
+33:06:04.0 |
HIP 15609 |
8.02 |
| 2026-05-22 00:00 |
03:22:29.88 |
+33:08:53.0 |
HIP 15767 |
9.77 |
| 2026-05-22 12:00 |
03:23:42.18 |
+33:11:40.4 |
HIP 15787 |
8.74 |
| 2026-05-23 00:00 |
03:24:54.56 |
+33:14:26.2 |
HIP 15876 |
18.47 |
| 2026-05-23 12:00 |
03:26:07.00 |
+33:17:10.2 |
HIP 15876 |
25.24 |
| 2026-05-24 00:00 |
03:27:19.49 |
+33:19:52.6 |
HIP 16168 |
31.30 |
| 2026-05-24 12:00 |
03:28:32.05 |
+33:22:33.2 |
HIP 16168 |
26.02 |
| 2026-05-25 00:00 |
03:29:44.68 |
+33:25:12.2 |
HIP 16168 |
29.10 |
| 2026-05-25 12:00 |
03:30:57.36 |
+33:27:49.4 |
HIP 16381 |
25.78 |
| 2026-05-26 00:00 |
03:32:10.09 |
+33:30:24.8 |
HIP 16557 |
15.70 |
| 2026-05-26 12:00 |
03:33:22.89 |
+33:32:58.6 |
HIP 16557 |
11.66 |
| 2026-05-27 00:00 |
03:34:35.74 |
+33:35:30.5 |
HIP 16744 |
11.04 |
| 2026-05-27 12:00 |
03:35:48.65 |
+33:38:00.7 |
HIP 16744 |
5.95 |
| 2026-05-28 00:00 |
03:37:01.61 |
+33:40:29.2 |
HIP 16744 |
20.54 |
| 2026-05-28 12:00 |
03:38:14.63 |
+33:42:55.8 |
HIP 17102 |
24.44 |
| 2026-05-29 00:00 |
03:39:27.70 |
+33:45:20.7 |
HIP 17102 |
17.51 |
| 2026-05-29 12:00 |
03:40:40.82 |
+33:47:43.7 |
HIP 17177 |
9.69 |
| 2026-05-30 00:00 |
03:41:53.99 |
+33:50:05.0 |
HIP 17313 |
9.82 |
| 2026-05-30 12:00 |
03:43:07.21 |
+33:52:24.4 |
HIP 17313 |
10.76 |
| 2026-05-31 00:00 |
03:44:20.48 |
+33:54:42.0 |
HIP 17387 |
16.96 |
| 2026-05-31 12:00 |
03:45:33.79 |
+33:56:57.8 |
HIP 17622 |
13.02 |
| 2026-06-01 00:00 |
03:46:47.15 |
+33:59:11.7 |
HIP 17622 |
7.94 |
| 2026-06-01 12:00 |
03:48:00.56 |
+34:01:23.8 |
HIP 17815 |
19.39 |
| 2026-06-02 00:00 |
03:49:14.01 |
+34:03:34.0 |
HIP 17969 |
15.76 |