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) |
| 2026-05-12 00:00 |
23:00:36.77 |
-11:34:18.6 |
HIP 113552 |
15.58 |
| 2026-05-12 12:00 |
23:00:41.91 |
-11:33:48.0 |
HIP 113552 |
16.11 |
| 2026-05-13 00:00 |
23:00:46.99 |
-11:33:17.8 |
HIP 113552 |
16.73 |
| 2026-05-13 12:00 |
23:00:52.01 |
-11:32:48.0 |
HIP 113552 |
17.42 |
| 2026-05-14 00:00 |
23:00:56.96 |
-11:32:18.7 |
HIP 113552 |
18.18 |
| 2026-05-14 12:00 |
23:01:01.85 |
-11:31:49.7 |
HIP 113552 |
18.98 |
| 2026-05-15 00:00 |
23:01:06.67 |
-11:31:21.3 |
HIP 113552 |
19.82 |
| 2026-05-15 12:00 |
23:01:11.43 |
-11:30:53.2 |
HIP 113552 |
20.70 |
| 2026-05-16 00:00 |
23:01:16.12 |
-11:30:25.6 |
HIP 113769 |
20.28 |
| 2026-05-16 12:00 |
23:01:20.74 |
-11:29:58.4 |
HIP 113769 |
19.09 |
| 2026-05-17 00:00 |
23:01:25.31 |
-11:29:31.6 |
HIP 113769 |
17.93 |
| 2026-05-17 12:00 |
23:01:29.80 |
-11:29:05.2 |
HIP 113769 |
16.79 |
| 2026-05-18 00:00 |
23:01:34.23 |
-11:28:39.3 |
HIP 113769 |
15.67 |
| 2026-05-18 12:00 |
23:01:38.59 |
-11:28:13.9 |
HIP 113769 |
14.58 |
| 2026-05-19 00:00 |
23:01:42.88 |
-11:27:48.9 |
HIP 113769 |
13.51 |
| 2026-05-19 12:00 |
23:01:47.11 |
-11:27:24.3 |
HIP 113769 |
12.48 |
| 2026-05-20 00:00 |
23:01:51.27 |
-11:27:00.1 |
HIP 113769 |
11.47 |
| 2026-05-20 12:00 |
23:01:55.36 |
-11:26:36.4 |
HIP 113769 |
10.50 |
| 2026-05-21 00:00 |
23:01:59.39 |
-11:26:13.1 |
HIP 113769 |
9.57 |
| 2026-05-21 12:00 |
23:02:03.34 |
-11:25:50.3 |
HIP 113769 |
8.68 |
| 2026-05-22 00:00 |
23:02:07.23 |
-11:25:27.9 |
HIP 113769 |
7.85 |
| 2026-05-22 12:00 |
23:02:11.05 |
-11:25:06.0 |
HIP 113769 |
7.08 |
| 2026-05-23 00:00 |
23:02:14.80 |
-11:24:44.5 |
HIP 113769 |
6.39 |
| 2026-05-23 12:00 |
23:02:18.48 |
-11:24:23.4 |
HIP 113769 |
5.80 |
| 2026-05-24 00:00 |
23:02:22.10 |
-11:24:02.8 |
HIP 113769 |
5.33 |
| 2026-05-24 12:00 |
23:02:25.64 |
-11:23:42.6 |
HIP 113769 |
5.00 |
| 2026-05-25 00:00 |
23:02:29.12 |
-11:23:22.9 |
HIP 113769 |
4.83 |
| 2026-05-25 12:00 |
23:02:32.52 |
-11:23:03.6 |
HIP 113769 |
4.83 |
| 2026-05-26 00:00 |
23:02:35.85 |
-11:22:44.8 |
HIP 113769 |
4.99 |
| 2026-05-26 12:00 |
23:02:39.12 |
-11:22:26.4 |
HIP 113769 |
5.29 |
| 2026-05-27 00:00 |
23:02:42.31 |
-11:22:08.4 |
HIP 113769 |
5.69 |
| 2026-05-27 12:00 |
23:02:45.44 |
-11:21:50.9 |
HIP 113769 |
6.16 |
| 2026-05-28 00:00 |
23:02:48.49 |
-11:21:33.8 |
HIP 113769 |
6.70 |
| 2026-05-28 12:00 |
23:02:51.48 |
-11:21:17.2 |
HIP 113779 |
7.18 |
| 2026-05-29 00:00 |
23:02:54.39 |
-11:21:01.0 |
HIP 113779 |
7.49 |
| 2026-05-29 12:00 |
23:02:57.23 |
-11:20:45.3 |
HIP 113779 |
7.85 |
| 2026-05-30 00:00 |
23:03:00.00 |
-11:20:30.0 |
HIP 113779 |
8.26 |
| 2026-05-30 12:00 |
23:03:02.70 |
-11:20:15.2 |
HIP 113779 |
8.69 |
| 2026-05-31 00:00 |
23:03:05.33 |
-11:20:00.8 |
HIP 113779 |
9.15 |
| 2026-05-31 12:00 |
23:03:07.89 |
-11:19:46.9 |
HIP 113779 |
9.62 |
| 2026-06-01 00:00 |
23:03:10.37 |
-11:19:33.4 |
HIP 113779 |
10.09 |
| 2026-06-01 12:00 |
23:03:12.78 |
-11:19:20.4 |
HIP 113779 |
10.58 |
| 2026-06-02 00:00 |
23:03:15.12 |
-11:19:07.8 |
HIP 113779 |
11.06 |