메타데이터
| 항목 |
값 |
| Designation |
500P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-02-23T01:30:16.018560Z |
| Orbit solution date (soln_date, UTC) |
2026-03-11T21:13:03Z |
| Obs used |
87 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
16.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-01-11T15:21:07.488000Z |
| Discovery magnitude (MPC) |
21.50 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-06-16.0000000 |
| e |
0.41335657 |
| q (au) |
1.968866 |
| a (au) |
3.356155 |
| i (deg) |
2.381049 |
| Ω (om, deg) |
116.500219 |
| ω (w, deg) |
42.292781 |
| M (ma, deg) |
202.412297 |
밝기
산란 + 전체 선형
$$
M_a = (14.441 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.441 |
| n |
6.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
18:25:59.21 |
-22:03:17.3 |
HIP 90451 |
34.44 |
| 2026-06-01 12:00 |
18:25:37.79 |
-22:03:39.4 |
HIP 90130 |
37.15 |
| 2026-06-02 00:00 |
18:25:16.16 |
-22:04:01.6 |
HIP 90130 |
33.71 |
| 2026-06-02 12:00 |
18:24:54.33 |
-22:04:23.8 |
HIP 90130 |
30.70 |
| 2026-06-03 00:00 |
18:24:32.29 |
-22:04:46.1 |
HIP 90130 |
28.26 |
| 2026-06-03 12:00 |
18:24:10.07 |
-22:05:08.5 |
HIP 90130 |
26.58 |
| 2026-06-04 00:00 |
18:23:47.65 |
-22:05:30.8 |
HIP 90029 |
24.24 |
| 2026-06-04 12:00 |
18:23:25.05 |
-22:05:53.3 |
HIP 90029 |
19.29 |
| 2026-06-05 00:00 |
18:23:02.26 |
-22:06:15.7 |
HIP 90029 |
14.52 |
| 2026-06-05 12:00 |
18:22:39.30 |
-22:06:38.2 |
HIP 90029 |
10.24 |
| 2026-06-06 00:00 |
18:22:16.17 |
-22:07:00.7 |
HIP 90029 |
7.45 |
| 2026-06-06 12:00 |
18:21:52.88 |
-22:07:23.2 |
HIP 90029 |
8.01 |
| 2026-06-07 00:00 |
18:21:29.42 |
-22:07:45.6 |
HIP 90029 |
11.49 |
| 2026-06-07 12:00 |
18:21:05.80 |
-22:08:08.1 |
HIP 89853 |
13.27 |
| 2026-06-08 00:00 |
18:20:42.03 |
-22:08:30.6 |
HIP 89853 |
7.85 |
| 2026-06-08 12:00 |
18:20:18.12 |
-22:08:53.1 |
HIP 89853 |
2.81 |
| 2026-06-09 00:00 |
18:19:54.07 |
-22:09:15.5 |
HIP 89853 |
3.99 |
| 2026-06-09 12:00 |
18:19:29.88 |
-22:09:37.9 |
HIP 89853 |
9.32 |
| 2026-06-10 00:00 |
18:19:05.55 |
-22:10:00.2 |
HIP 89853 |
14.89 |
| 2026-06-10 12:00 |
18:18:41.11 |
-22:10:22.6 |
HIP 89853 |
20.52 |
| 2026-06-11 00:00 |
18:18:16.54 |
-22:10:44.8 |
HIP 89607 |
15.49 |
| 2026-06-11 12:00 |
18:17:51.86 |
-22:11:07.0 |
HIP 89607 |
9.81 |
| 2026-06-12 00:00 |
18:17:27.07 |
-22:11:29.1 |
HIP 89607 |
4.23 |
| 2026-06-12 12:00 |
18:17:02.18 |
-22:11:51.2 |
HIP 89607 |
2.40 |
| 2026-06-13 00:00 |
18:16:37.20 |
-22:12:13.2 |
HIP 89607 |
7.78 |
| 2026-06-13 12:00 |
18:16:12.12 |
-22:12:35.1 |
HIP 89607 |
13.53 |
| 2026-06-14 00:00 |
18:15:46.95 |
-22:12:56.9 |
HIP 89410 |
18.37 |
| 2026-06-14 12:00 |
18:15:21.71 |
-22:13:18.7 |
HIP 89410 |
14.54 |
| 2026-06-15 00:00 |
18:14:56.40 |
-22:13:40.3 |
HIP 89410 |
12.42 |
| 2026-06-15 12:00 |
18:14:31.01 |
-22:14:01.8 |
HIP 89410 |
12.89 |
| 2026-06-16 00:00 |
18:14:05.57 |
-22:14:23.2 |
HIP 89306 |
15.64 |
| 2026-06-16 12:00 |
18:13:40.08 |
-22:14:44.5 |
HIP 89306 |
13.02 |
| 2026-06-17 00:00 |
18:13:14.53 |
-22:15:05.7 |
HIP 89306 |
12.82 |
| 2026-06-17 12:00 |
18:12:48.95 |
-22:15:26.8 |
HIP 89306 |
15.15 |
| 2026-06-18 00:00 |
18:12:23.32 |
-22:15:47.7 |
HIP 89306 |
19.11 |
| 2026-06-18 12:00 |
18:11:57.67 |
-22:16:08.5 |
HIP 89071 |
17.10 |
| 2026-06-19 00:00 |
18:11:32.00 |
-22:16:29.2 |
HIP 89071 |
11.27 |
| 2026-06-19 12:00 |
18:11:06.31 |
-22:16:49.7 |
HIP 89071 |
5.68 |
| 2026-06-20 00:00 |
18:10:40.60 |
-22:17:10.1 |
HIP 89071 |
2.90 |
| 2026-06-20 12:00 |
18:10:14.90 |
-22:17:30.3 |
HIP 89071 |
7.45 |
| 2026-06-21 00:00 |
18:09:49.19 |
-22:17:50.4 |
HIP 88932 |
10.95 |
| 2026-06-21 12:00 |
18:09:23.49 |
-22:18:10.3 |
HIP 88932 |
7.62 |
| 2026-06-22 00:00 |
18:08:57.80 |
-22:18:30.0 |
HIP 88932 |
8.20 |