메타데이터
| 항목 |
값 |
| Designation |
494P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-31T00:08:54.064320Z |
| Orbit solution date (soln_date, UTC) |
2024-12-14T13:27:26Z |
| Obs used |
62 |
| NEO |
- |
| M1 |
15.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-10-08T09:52:34.550400Z |
| Discovery magnitude (MPC) |
23.38 G |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-05-16.0000000 |
| e |
0.35748875 |
| q (au) |
2.440228 |
| a (au) |
3.797954 |
| i (deg) |
7.788642 |
| Ω (om, deg) |
245.048909 |
| ω (w, deg) |
48.878232 |
| M (ma, deg) |
309.264539 |
밝기
산란 + 전체 선형
$$
M_a = (16.901 + 5.392\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.901 |
| n |
5.392 |
| gf |
1.000 |
| gb |
-0.718 |
| k |
0.800 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
03:13:40.58 |
+18:29:27.6 |
HIP 15062 |
12.59 |
| 2026-03-26 12:00 |
03:14:09.20 |
+18:30:54.6 |
HIP 15062 |
12.69 |
| 2026-03-27 00:00 |
03:14:37.89 |
+18:32:21.7 |
HIP 15062 |
16.14 |
| 2026-03-27 12:00 |
03:15:06.66 |
+18:33:48.9 |
HIP 15062 |
21.38 |
| 2026-03-28 00:00 |
03:15:35.51 |
+18:35:16.1 |
HIP 15062 |
27.42 |
| 2026-03-28 12:00 |
03:16:04.42 |
+18:36:43.4 |
HIP 15062 |
33.85 |
| 2026-03-29 00:00 |
03:16:33.41 |
+18:38:10.7 |
HIP 15412 |
31.84 |
| 2026-03-29 12:00 |
03:17:02.47 |
+18:39:38.1 |
HIP 15412 |
25.97 |
| 2026-03-30 00:00 |
03:17:31.60 |
+18:41:05.6 |
HIP 15412 |
20.83 |
| 2026-03-30 12:00 |
03:18:00.80 |
+18:42:33.0 |
HIP 15412 |
17.11 |
| 2026-03-31 00:00 |
03:18:30.07 |
+18:44:00.5 |
HIP 15412 |
15.85 |
| 2026-03-31 12:00 |
03:18:59.41 |
+18:45:28.1 |
HIP 15412 |
17.62 |
| 2026-04-01 00:00 |
03:19:28.81 |
+18:46:55.6 |
HIP 15506 |
18.21 |
| 2026-04-01 12:00 |
03:19:58.29 |
+18:48:23.2 |
HIP 15588 |
12.14 |
| 2026-04-02 00:00 |
03:20:27.82 |
+18:49:50.7 |
HIP 15588 |
7.13 |
| 2026-04-02 12:00 |
03:20:57.43 |
+18:51:18.3 |
HIP 15588 |
7.52 |
| 2026-04-03 00:00 |
03:21:27.10 |
+18:52:45.8 |
HIP 15588 |
12.85 |
| 2026-04-03 12:00 |
03:21:56.83 |
+18:54:13.4 |
HIP 15588 |
19.41 |
| 2026-04-04 00:00 |
03:22:26.63 |
+18:55:40.9 |
HIP 15588 |
26.31 |
| 2026-04-04 12:00 |
03:22:56.49 |
+18:57:08.4 |
HIP 15808 |
25.89 |
| 2026-04-05 00:00 |
03:23:26.41 |
+18:58:35.9 |
HIP 15808 |
25.44 |
| 2026-04-05 12:00 |
03:23:56.40 |
+19:00:03.4 |
HIP 15808 |
27.01 |
| 2026-04-06 00:00 |
03:24:26.44 |
+19:01:30.8 |
HIP 15808 |
30.27 |
| 2026-04-06 12:00 |
03:24:56.55 |
+19:02:58.2 |
HIP 16077 |
34.73 |
| 2026-04-07 00:00 |
03:25:26.71 |
+19:04:25.5 |
HIP 16077 |
29.71 |
| 2026-04-07 12:00 |
03:25:56.94 |
+19:05:52.8 |
HIP 16109 |
23.10 |
| 2026-04-08 00:00 |
03:26:27.22 |
+19:07:20.0 |
HIP 16109 |
15.80 |
| 2026-04-08 12:00 |
03:26:57.56 |
+19:08:47.1 |
HIP 16109 |
8.51 |
| 2026-04-09 00:00 |
03:27:27.96 |
+19:10:14.2 |
HIP 16109 |
1.39 |
| 2026-04-09 12:00 |
03:27:58.41 |
+19:11:41.2 |
HIP 16109 |
6.24 |
| 2026-04-10 00:00 |
03:28:28.92 |
+19:13:08.1 |
HIP 16109 |
13.56 |
| 2026-04-10 12:00 |
03:28:59.49 |
+19:14:35.0 |
HIP 16109 |
20.91 |
| 2026-04-11 00:00 |
03:29:30.11 |
+19:16:01.7 |
HIP 16109 |
28.27 |
| 2026-04-11 12:00 |
03:30:00.78 |
+19:17:28.4 |
HIP 16374 |
32.26 |
| 2026-04-12 00:00 |
03:30:31.51 |
+19:18:54.9 |
HIP 16401 |
29.78 |
| 2026-04-12 12:00 |
03:31:02.29 |
+19:20:21.4 |
HIP 16401 |
26.78 |
| 2026-04-13 00:00 |
03:31:33.12 |
+19:21:47.7 |
HIP 16551 |
22.34 |
| 2026-04-13 12:00 |
03:32:04.00 |
+19:23:13.9 |
HIP 16551 |
15.02 |
| 2026-04-14 00:00 |
03:32:34.93 |
+19:24:40.0 |
HIP 16551 |
7.90 |
| 2026-04-14 12:00 |
03:33:05.92 |
+19:26:06.0 |
HIP 16551 |
3.13 |
| 2026-04-15 00:00 |
03:33:36.95 |
+19:27:31.9 |
HIP 16551 |
8.25 |
| 2026-04-15 12:00 |
03:34:08.03 |
+19:28:57.6 |
HIP 16551 |
15.42 |
| 2026-04-16 00:00 |
03:34:39.16 |
+19:30:23.1 |
HIP 16707 |
12.48 |