메타데이터
| 항목 |
값 |
| Designation |
P/2023 S1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-02-24T01:28:32.813760Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:24Z |
| Obs used |
1925 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
11.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-09-20T14:30:23.443200Z |
| Discovery magnitude (MPC) |
20.36 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-10-30.0000000 |
| e |
0.31884545 |
| q (au) |
2.619724 |
| a (au) |
3.846006 |
| i (deg) |
9.156194 |
| Ω (om, deg) |
317.292646 |
| ω (w, deg) |
180.274114 |
| M (ma, deg) |
344.703107 |
밝기
산란 + 전체 선형
$$
M_a = (9.374 + 5.163\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.374 |
| n |
5.163 |
| gf |
0.889 |
| gb |
-0.806 |
| k |
0.997 |
| 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) |
| 2026-03-26 00:00 |
15:32:50.19 |
-30:57:29.0 |
HIP 76084 |
12.81 |
| 2026-03-26 12:00 |
15:32:43.76 |
-30:58:38.4 |
HIP 76084 |
11.14 |
| 2026-03-27 00:00 |
15:32:36.99 |
-30:59:46.3 |
HIP 76084 |
9.50 |
| 2026-03-27 12:00 |
15:32:29.88 |
-31:00:52.7 |
HIP 76084 |
7.96 |
| 2026-03-28 00:00 |
15:32:22.44 |
-31:01:57.5 |
HIP 76084 |
6.62 |
| 2026-03-28 12:00 |
15:32:14.65 |
-31:03:00.8 |
HIP 76084 |
5.67 |
| 2026-03-29 00:00 |
15:32:06.53 |
-31:04:02.5 |
HIP 76084 |
5.38 |
| 2026-03-29 12:00 |
15:31:58.08 |
-31:05:02.6 |
HIP 76084 |
5.89 |
| 2026-03-30 00:00 |
15:31:49.29 |
-31:06:01.2 |
HIP 76084 |
7.08 |
| 2026-03-30 12:00 |
15:31:40.17 |
-31:06:58.1 |
HIP 76084 |
8.70 |
| 2026-03-31 00:00 |
15:31:30.73 |
-31:07:53.5 |
HIP 76084 |
10.60 |
| 2026-03-31 12:00 |
15:31:20.95 |
-31:08:47.2 |
HIP 76084 |
12.67 |
| 2026-04-01 00:00 |
15:31:10.84 |
-31:09:39.3 |
HIP 76084 |
14.87 |
| 2026-04-01 12:00 |
15:31:00.42 |
-31:10:29.7 |
HIP 76084 |
17.17 |
| 2026-04-02 00:00 |
15:30:49.66 |
-31:11:18.5 |
HIP 76084 |
19.55 |
| 2026-04-02 12:00 |
15:30:38.59 |
-31:12:05.6 |
HIP 76084 |
22.01 |
| 2026-04-03 00:00 |
15:30:27.19 |
-31:12:51.0 |
HIP 75769 |
22.57 |
| 2026-04-03 12:00 |
15:30:15.48 |
-31:13:34.7 |
HIP 75769 |
19.96 |
| 2026-04-04 00:00 |
15:30:03.45 |
-31:14:16.7 |
HIP 75769 |
17.30 |
| 2026-04-04 12:00 |
15:29:51.11 |
-31:14:56.9 |
HIP 75769 |
14.59 |
| 2026-04-05 00:00 |
15:29:38.46 |
-31:15:35.4 |
HIP 75769 |
11.81 |
| 2026-04-05 12:00 |
15:29:25.49 |
-31:16:12.2 |
HIP 75769 |
8.98 |
| 2026-04-06 00:00 |
15:29:12.22 |
-31:16:47.2 |
HIP 75769 |
6.09 |
| 2026-04-06 12:00 |
15:28:58.64 |
-31:17:20.4 |
HIP 75769 |
3.14 |
| 2026-04-07 00:00 |
15:28:44.76 |
-31:17:51.8 |
HIP 75769 |
0.27 |
| 2026-04-07 12:00 |
15:28:30.58 |
-31:18:21.4 |
HIP 75769 |
2.96 |
| 2026-04-08 00:00 |
15:28:16.10 |
-31:18:49.2 |
HIP 75769 |
6.08 |
| 2026-04-08 12:00 |
15:28:01.33 |
-31:19:15.2 |
HIP 75769 |
9.26 |
| 2026-04-09 00:00 |
15:27:46.27 |
-31:19:39.3 |
HIP 75769 |
12.50 |
| 2026-04-09 12:00 |
15:27:30.92 |
-31:20:01.6 |
HIP 75769 |
15.79 |
| 2026-04-10 00:00 |
15:27:15.28 |
-31:20:22.0 |
HIP 75769 |
19.15 |
| 2026-04-10 12:00 |
15:26:59.36 |
-31:20:40.6 |
HIP 75592 |
18.58 |
| 2026-04-11 00:00 |
15:26:43.15 |
-31:20:57.3 |
HIP 75592 |
17.73 |
| 2026-04-11 12:00 |
15:26:26.68 |
-31:21:12.1 |
HIP 75592 |
17.58 |
| 2026-04-12 00:00 |
15:26:09.93 |
-31:21:25.0 |
HIP 75592 |
18.17 |
| 2026-04-12 12:00 |
15:25:52.91 |
-31:21:35.9 |
HIP 75592 |
19.47 |
| 2026-04-13 00:00 |
15:25:35.62 |
-31:21:45.0 |
HIP 75404 |
17.08 |
| 2026-04-13 12:00 |
15:25:18.08 |
-31:21:52.1 |
HIP 75404 |
13.90 |
| 2026-04-14 00:00 |
15:25:00.27 |
-31:21:57.3 |
HIP 75404 |
11.05 |
| 2026-04-14 12:00 |
15:24:42.21 |
-31:22:00.6 |
HIP 75404 |
8.96 |
| 2026-04-15 00:00 |
15:24:23.90 |
-31:22:01.9 |
HIP 75404 |
8.29 |
| 2026-04-15 12:00 |
15:24:05.35 |
-31:22:01.3 |
HIP 75404 |
9.41 |
| 2026-04-16 00:00 |
15:23:46.56 |
-31:21:58.7 |
HIP 75404 |
11.88 |