P/2015 B1 (PANSTARRS)
메타데이터
| 항목 |
값 |
| Designation |
P/2015 B1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-09-19T17:29:17.494080Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T18:10:33Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
8.700 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2015-01-29T12:27:06.048000Z |
| Discovery magnitude (MPC) |
20.50 T |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-03-20.0000000 |
| e |
0.38244485 |
| q (au) |
5.975638 |
| a (au) |
9.676282 |
| i (deg) |
18.027730 |
| Ω (om, deg) |
353.355655 |
| ω (w, deg) |
188.274147 |
| M (ma, deg) |
353.983856 |
밝기
산란 + 전체 선형
$$
M_a = (12.115 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.115 |
| n |
2.000 |
| gf |
0.848 |
| gb |
-0.957 |
| k |
1.000 |
| δ90 |
2.031 |
| 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) |
| 2026-02-03 00:00 |
22:31:31.15 |
-14:46:53.4 |
HIP 111141 |
15.16 |
| 2026-02-03 12:00 |
22:31:40.99 |
-14:45:41.9 |
HIP 111141 |
15.63 |
| 2026-02-04 00:00 |
22:31:50.85 |
-14:44:30.4 |
HIP 111141 |
16.53 |
| 2026-02-04 12:00 |
22:32:00.73 |
-14:43:18.9 |
HIP 111141 |
17.79 |
| 2026-02-05 00:00 |
22:32:10.63 |
-14:42:07.3 |
HIP 111141 |
19.34 |
| 2026-02-05 12:00 |
22:32:20.55 |
-14:40:55.7 |
HIP 111141 |
21.12 |
| 2026-02-06 00:00 |
22:32:30.49 |
-14:39:44.0 |
HIP 111141 |
23.09 |
| 2026-02-06 12:00 |
22:32:40.45 |
-14:38:32.4 |
HIP 111141 |
25.19 |
| 2026-02-07 00:00 |
22:32:50.43 |
-14:37:20.7 |
HIP 111141 |
27.40 |
| 2026-02-07 12:00 |
22:33:00.43 |
-14:36:08.9 |
HIP 111141 |
29.69 |
| 2026-02-08 00:00 |
22:33:10.45 |
-14:34:57.1 |
HIP 111141 |
32.05 |
| 2026-02-08 12:00 |
22:33:20.48 |
-14:33:45.4 |
HIP 111141 |
34.47 |
| 2026-02-09 00:00 |
22:33:30.53 |
-14:32:33.5 |
HIP 111141 |
36.93 |
| 2026-02-09 12:00 |
22:33:40.59 |
-14:31:21.7 |
HIP 111424 |
37.44 |
| 2026-02-10 00:00 |
22:33:50.67 |
-14:30:09.9 |
HIP 111424 |
37.95 |
| 2026-02-10 12:00 |
22:34:00.77 |
-14:28:58.0 |
HIP 111424 |
38.64 |
| 2026-02-11 00:00 |
22:34:10.88 |
-14:27:46.2 |
HIP 111424 |
39.51 |
| 2026-02-11 12:00 |
22:34:21.01 |
-14:26:34.3 |
HIP 111646 |
40.28 |
| 2026-02-12 00:00 |
22:34:31.14 |
-14:25:22.4 |
HIP 111646 |
38.31 |
| 2026-02-12 12:00 |
22:34:41.30 |
-14:24:10.6 |
HIP 111646 |
36.43 |
| 2026-02-13 00:00 |
22:34:51.46 |
-14:22:58.7 |
HIP 111646 |
34.66 |
| 2026-02-13 12:00 |
22:35:01.64 |
-14:21:46.8 |
HIP 111646 |
33.02 |
| 2026-02-14 00:00 |
22:35:11.83 |
-14:20:35.0 |
HIP 111646 |
31.53 |
| 2026-02-14 12:00 |
22:35:22.03 |
-14:19:23.1 |
HIP 111646 |
30.22 |
| 2026-02-15 00:00 |
22:35:32.24 |
-14:18:11.3 |
HIP 111646 |
29.10 |
| 2026-02-15 12:00 |
22:35:42.46 |
-14:16:59.5 |
HIP 111646 |
28.21 |
| 2026-02-16 00:00 |
22:35:52.69 |
-14:15:47.7 |
HIP 111646 |
27.55 |
| 2026-02-16 12:00 |
22:36:02.93 |
-14:14:35.9 |
HIP 111646 |
27.16 |
| 2026-02-17 00:00 |
22:36:13.18 |
-14:13:24.2 |
HIP 111646 |
27.05 |
| 2026-02-17 12:00 |
22:36:23.44 |
-14:12:12.5 |
HIP 111646 |
27.21 |
| 2026-02-18 00:00 |
22:36:33.70 |
-14:11:00.8 |
HIP 111646 |
27.65 |
| 2026-02-18 12:00 |
22:36:43.97 |
-14:09:49.2 |
HIP 111777 |
26.30 |
| 2026-02-19 00:00 |
22:36:54.25 |
-14:08:37.5 |
HIP 111777 |
23.61 |
| 2026-02-19 12:00 |
22:37:04.53 |
-14:07:26.0 |
HIP 111777 |
20.93 |
| 2026-02-20 00:00 |
22:37:14.82 |
-14:06:14.5 |
HIP 111777 |
18.27 |
| 2026-02-20 12:00 |
22:37:25.11 |
-14:05:03.0 |
HIP 111777 |
15.65 |
| 2026-02-21 00:00 |
22:37:35.41 |
-14:03:51.6 |
HIP 111777 |
13.08 |
| 2026-02-21 12:00 |
22:37:45.71 |
-14:02:40.2 |
HIP 111777 |
10.62 |
| 2026-02-22 00:00 |
22:37:56.02 |
-14:01:28.9 |
HIP 111777 |
8.34 |
| 2026-02-22 12:00 |
22:38:06.32 |
-14:00:17.7 |
HIP 111777 |
6.46 |
| 2026-02-23 00:00 |
22:38:16.63 |
-13:59:06.5 |
HIP 111777 |
5.40 |
| 2026-02-23 12:00 |
22:38:26.94 |
-13:57:55.4 |
HIP 111777 |
5.65 |
| 2026-02-24 00:00 |
22:38:37.25 |
-13:56:44.3 |
HIP 111777 |
7.07 |