메타데이터
| 항목 |
값 |
| Designation |
P/2020 S5 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-08-08T07:36:05.472000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:34:12Z |
| Obs used |
74 |
| NEO |
- |
| M1 |
16.900 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-09-21T13:27:24.220800Z |
| Discovery magnitude (MPC) |
20.40 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-10-14.0000000 |
| e |
0.33831667 |
| q (au) |
2.678655 |
| a (au) |
4.048244 |
| i (deg) |
12.354134 |
| Ω (om, deg) |
316.000132 |
| ω (w, deg) |
52.998514 |
| M (ma, deg) |
8.069024 |
밝기
산란 + 전체 선형
$$
M_a = (15.871 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.871 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
14:57:39.20 |
-33:04:14.3 |
HIP 73221 |
12.48 |
| 2026-05-12 12:00 |
14:57:18.17 |
-33:02:54.5 |
HIP 73174 |
12.89 |
| 2026-05-13 00:00 |
14:56:57.15 |
-33:01:33.4 |
HIP 73174 |
12.48 |
| 2026-05-13 12:00 |
14:56:36.16 |
-33:00:11.0 |
HIP 73174 |
13.69 |
| 2026-05-14 00:00 |
14:56:15.19 |
-32:58:47.4 |
HIP 73174 |
16.16 |
| 2026-05-14 12:00 |
14:55:54.26 |
-32:57:22.5 |
HIP 72985 |
15.13 |
| 2026-05-15 00:00 |
14:55:33.36 |
-32:55:56.5 |
HIP 72985 |
10.79 |
| 2026-05-15 12:00 |
14:55:12.51 |
-32:54:29.2 |
HIP 72985 |
6.79 |
| 2026-05-16 00:00 |
14:54:51.70 |
-32:53:00.8 |
HIP 72985 |
4.28 |
| 2026-05-16 12:00 |
14:54:30.94 |
-32:51:31.2 |
HIP 72985 |
5.73 |
| 2026-05-17 00:00 |
14:54:10.23 |
-32:50:00.5 |
HIP 72985 |
9.47 |
| 2026-05-17 12:00 |
14:53:49.58 |
-32:48:28.6 |
HIP 72985 |
13.73 |
| 2026-05-18 00:00 |
14:53:28.98 |
-32:46:55.7 |
HIP 72755 |
14.87 |
| 2026-05-18 12:00 |
14:53:08.46 |
-32:45:21.6 |
HIP 72755 |
11.89 |
| 2026-05-19 00:00 |
14:52:48.00 |
-32:43:46.5 |
HIP 72755 |
10.20 |
| 2026-05-19 12:00 |
14:52:27.61 |
-32:42:10.3 |
HIP 72755 |
10.45 |
| 2026-05-20 00:00 |
14:52:07.31 |
-32:40:33.2 |
HIP 72755 |
12.51 |
| 2026-05-20 12:00 |
14:51:47.08 |
-32:38:54.9 |
HIP 72755 |
15.68 |
| 2026-05-21 00:00 |
14:51:26.93 |
-32:37:15.8 |
HIP 72600 |
13.88 |
| 2026-05-21 12:00 |
14:51:06.88 |
-32:35:35.6 |
HIP 72600 |
9.75 |
| 2026-05-22 00:00 |
14:50:46.91 |
-32:33:54.5 |
HIP 72600 |
6.23 |
| 2026-05-22 12:00 |
14:50:27.04 |
-32:32:12.4 |
HIP 72600 |
4.83 |
| 2026-05-23 00:00 |
14:50:07.26 |
-32:30:29.5 |
HIP 72536 |
6.17 |
| 2026-05-23 12:00 |
14:49:47.59 |
-32:28:45.7 |
HIP 72536 |
3.16 |
| 2026-05-24 00:00 |
14:49:28.03 |
-32:27:01.0 |
HIP 72536 |
4.70 |
| 2026-05-24 12:00 |
14:49:08.57 |
-32:25:15.4 |
HIP 72536 |
8.60 |
| 2026-05-25 00:00 |
14:48:49.22 |
-32:23:29.0 |
HIP 72536 |
12.85 |
| 2026-05-25 12:00 |
14:48:29.99 |
-32:21:41.9 |
HIP 72372 |
10.31 |
| 2026-05-26 00:00 |
14:48:10.87 |
-32:19:53.9 |
HIP 72372 |
6.25 |
| 2026-05-26 12:00 |
14:47:51.88 |
-32:18:05.2 |
HIP 72372 |
3.28 |
| 2026-05-27 00:00 |
14:47:33.01 |
-32:16:15.7 |
HIP 72372 |
4.59 |
| 2026-05-27 12:00 |
14:47:14.27 |
-32:14:25.5 |
HIP 72372 |
8.33 |
| 2026-05-28 00:00 |
14:46:55.66 |
-32:12:34.7 |
HIP 72257 |
5.21 |
| 2026-05-28 12:00 |
14:46:37.18 |
-32:10:43.1 |
HIP 72257 |
0.88 |
| 2026-05-29 00:00 |
14:46:18.83 |
-32:08:50.9 |
HIP 72257 |
3.43 |
| 2026-05-29 12:00 |
14:46:00.63 |
-32:06:58.0 |
HIP 72257 |
7.72 |
| 2026-05-30 00:00 |
14:45:42.57 |
-32:05:04.6 |
HIP 72257 |
11.99 |
| 2026-05-30 12:00 |
14:45:24.65 |
-32:03:10.5 |
HIP 72257 |
16.23 |
| 2026-05-31 00:00 |
14:45:06.88 |
-32:01:15.9 |
HIP 72257 |
20.46 |
| 2026-05-31 12:00 |
14:44:49.25 |
-31:59:20.7 |
HIP 72257 |
24.65 |
| 2026-06-01 00:00 |
14:44:31.78 |
-31:57:25.0 |
HIP 72257 |
28.83 |
| 2026-06-01 12:00 |
14:44:14.47 |
-31:55:28.8 |
HIP 72245 |
31.79 |
| 2026-06-02 00:00 |
14:43:57.31 |
-31:53:32.2 |
HIP 72245 |
34.32 |