메타데이터
| 항목 |
값 |
| Designation |
503P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-11-12T13:38:28.222080Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:12:36Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
11.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2018-06-03T06:49:46.848000Z |
| Discovery magnitude (MPC) |
20.00 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-10-11.0000000 |
| e |
0.48303012 |
| q (au) |
1.885951 |
| a (au) |
3.648087 |
| i (deg) |
10.594784 |
| Ω (om, deg) |
268.626025 |
| ω (w, deg) |
17.915078 |
| M (ma, deg) |
47.022821 |
밝기
산란 + 전체 선형
$$
M_a = (12.375 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.375 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
00:35:37.35 |
+12:44:16.3 |
HIP 2828 |
9.25 |
| 2026-05-12 12:00 |
00:36:25.11 |
+12:50:03.1 |
HIP 2828 |
16.22 |
| 2026-05-13 00:00 |
00:37:12.77 |
+12:55:49.1 |
HIP 2885 |
22.71 |
| 2026-05-13 12:00 |
00:38:00.31 |
+13:01:34.2 |
HIP 2885 |
25.87 |
| 2026-05-14 00:00 |
00:38:47.75 |
+13:07:18.4 |
HIP 2885 |
33.99 |
| 2026-05-14 12:00 |
00:39:35.08 |
+13:13:01.8 |
HIP 3262 |
32.34 |
| 2026-05-15 00:00 |
00:40:22.30 |
+13:18:44.3 |
HIP 3262 |
27.09 |
| 2026-05-15 12:00 |
00:41:09.41 |
+13:24:25.9 |
HIP 3262 |
27.41 |
| 2026-05-16 00:00 |
00:41:56.41 |
+13:30:06.6 |
HIP 3323 |
30.17 |
| 2026-05-16 12:00 |
00:42:43.30 |
+13:35:46.3 |
HIP 3323 |
24.49 |
| 2026-05-17 00:00 |
00:43:30.08 |
+13:41:25.2 |
HIP 3323 |
24.74 |
| 2026-05-17 12:00 |
00:44:16.74 |
+13:47:03.2 |
HIP 3457 |
28.63 |
| 2026-05-18 00:00 |
00:45:03.30 |
+13:52:40.3 |
HIP 3642 |
24.27 |
| 2026-05-18 12:00 |
00:45:49.74 |
+13:58:16.4 |
HIP 3642 |
11.96 |
| 2026-05-19 00:00 |
00:46:36.06 |
+14:03:51.6 |
HIP 3642 |
3.71 |
| 2026-05-19 12:00 |
00:47:22.27 |
+14:09:25.9 |
HIP 3642 |
14.09 |
| 2026-05-20 00:00 |
00:48:08.37 |
+14:14:59.3 |
HIP 3633 |
23.33 |
| 2026-05-20 12:00 |
00:48:54.35 |
+14:20:31.7 |
HIP 3823 |
28.13 |
| 2026-05-21 00:00 |
00:49:40.21 |
+14:26:03.2 |
HIP 3823 |
24.09 |
| 2026-05-21 12:00 |
00:50:25.96 |
+14:31:33.8 |
HIP 4000 |
21.66 |
| 2026-05-22 00:00 |
00:51:11.59 |
+14:37:03.4 |
HIP 4000 |
22.49 |
| 2026-05-22 12:00 |
00:51:57.10 |
+14:42:32.0 |
HIP 4096 |
20.20 |
| 2026-05-23 00:00 |
00:52:42.49 |
+14:47:59.7 |
HIP 4096 |
12.51 |
| 2026-05-23 12:00 |
00:53:27.77 |
+14:53:26.5 |
HIP 4096 |
14.31 |
| 2026-05-24 00:00 |
00:54:12.92 |
+14:58:52.3 |
HIP 4096 |
23.45 |
| 2026-05-24 12:00 |
00:54:57.96 |
+15:04:17.1 |
HIP 4400 |
21.61 |
| 2026-05-25 00:00 |
00:55:42.88 |
+15:09:41.0 |
HIP 4400 |
13.83 |
| 2026-05-25 12:00 |
00:56:27.68 |
+15:15:04.0 |
HIP 4400 |
14.45 |
| 2026-05-26 00:00 |
00:57:12.36 |
+15:20:25.9 |
HIP 4400 |
22.73 |
| 2026-05-26 12:00 |
00:57:56.91 |
+15:25:46.9 |
HIP 4387 |
28.39 |
| 2026-05-27 00:00 |
00:58:41.35 |
+15:31:07.0 |
HIP 4666 |
22.37 |
| 2026-05-27 12:00 |
00:59:25.66 |
+15:36:26.0 |
HIP 4666 |
10.79 |
| 2026-05-28 00:00 |
01:00:09.85 |
+15:41:44.1 |
HIP 4666 |
4.04 |
| 2026-05-28 12:00 |
01:00:53.92 |
+15:47:01.3 |
HIP 4666 |
14.06 |
| 2026-05-29 00:00 |
01:01:37.87 |
+15:52:17.4 |
HIP 4912 |
25.63 |
| 2026-05-29 12:00 |
01:02:21.69 |
+15:57:32.6 |
HIP 4912 |
14.30 |
| 2026-05-30 00:00 |
01:03:05.38 |
+16:02:46.8 |
HIP 4912 |
5.41 |
| 2026-05-30 12:00 |
01:03:48.96 |
+16:08:00.0 |
HIP 4912 |
11.34 |
| 2026-05-31 00:00 |
01:04:32.40 |
+16:13:12.3 |
HIP 5075 |
5.62 |
| 2026-05-31 12:00 |
01:05:15.72 |
+16:18:23.5 |
HIP 5075 |
6.27 |
| 2026-06-01 00:00 |
01:05:58.92 |
+16:23:33.8 |
HIP 5185 |
7.36 |
| 2026-06-01 12:00 |
01:06:41.98 |
+16:28:43.1 |
HIP 5185 |
10.92 |
| 2026-06-02 00:00 |
01:07:24.92 |
+16:33:51.4 |
HIP 5185 |
21.20 |