메타데이터
| 항목 |
값 |
| Designation |
C/2019 O2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-04-07T19:39:00.829440Z |
| Orbit solution date (soln_date, UTC) |
2026-05-22T14:12:19Z |
| Obs used |
584 |
| NEO |
- |
| M1 |
10.200 |
| K1 |
4.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-07-24T12:32:27.456000Z |
| Discovery magnitude (MPC) |
20.50 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-06-07.0000000 |
| e |
0.83112268 |
| q (au) |
9.682783 |
| a (au) |
57.336193 |
| i (deg) |
93.288564 |
| Ω (om, deg) |
48.306054 |
| ω (w, deg) |
129.663354 |
| M (ma, deg) |
358.479389 |
밝기
산란 + 전체 선형
$$
M_a = (8.986 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.986 |
| n |
2.000 |
| gf |
0.967 |
| gb |
-0.504 |
| k |
1.000 |
| δ90 |
9.772 |
| 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) |
| 2026-06-01 00:00 |
15:01:25.90 |
-12:11:04.9 |
HIP 73444 |
20.76 |
| 2026-06-01 12:00 |
15:01:14.21 |
-12:11:27.8 |
HIP 73444 |
18.73 |
| 2026-06-02 00:00 |
15:01:02.56 |
-12:11:50.9 |
HIP 73444 |
16.94 |
| 2026-06-02 12:00 |
15:00:50.97 |
-12:12:14.3 |
HIP 73444 |
15.49 |
| 2026-06-03 00:00 |
15:00:39.42 |
-12:12:37.9 |
HIP 73444 |
14.45 |
| 2026-06-03 12:00 |
15:00:27.92 |
-12:13:01.7 |
HIP 73444 |
13.93 |
| 2026-06-04 00:00 |
15:00:16.47 |
-12:13:25.7 |
HIP 73444 |
13.97 |
| 2026-06-04 12:00 |
15:00:05.06 |
-12:13:50.0 |
HIP 73444 |
14.56 |
| 2026-06-05 00:00 |
14:59:53.72 |
-12:14:14.5 |
HIP 73444 |
15.63 |
| 2026-06-05 12:00 |
14:59:42.42 |
-12:14:39.2 |
HIP 73444 |
17.08 |
| 2026-06-06 00:00 |
14:59:31.17 |
-12:15:04.1 |
HIP 73444 |
18.83 |
| 2026-06-06 12:00 |
14:59:19.98 |
-12:15:29.3 |
HIP 73444 |
20.79 |
| 2026-06-07 00:00 |
14:59:08.85 |
-12:15:54.7 |
HIP 73213 |
22.61 |
| 2026-06-07 12:00 |
14:58:57.77 |
-12:16:20.4 |
HIP 73213 |
20.02 |
| 2026-06-08 00:00 |
14:58:46.74 |
-12:16:46.3 |
HIP 73213 |
17.49 |
| 2026-06-08 12:00 |
14:58:35.77 |
-12:17:12.4 |
HIP 73213 |
15.05 |
| 2026-06-09 00:00 |
14:58:24.86 |
-12:17:38.8 |
HIP 73213 |
12.71 |
| 2026-06-09 12:00 |
14:58:14.01 |
-12:18:05.4 |
HIP 73213 |
10.57 |
| 2026-06-10 00:00 |
14:58:03.22 |
-12:18:32.3 |
HIP 73213 |
8.72 |
| 2026-06-10 12:00 |
14:57:52.48 |
-12:18:59.5 |
HIP 73213 |
7.41 |
| 2026-06-11 00:00 |
14:57:41.81 |
-12:19:26.9 |
HIP 73213 |
6.90 |
| 2026-06-11 12:00 |
14:57:31.20 |
-12:19:54.5 |
HIP 73213 |
7.37 |
| 2026-06-12 00:00 |
14:57:20.65 |
-12:20:22.4 |
HIP 73213 |
8.63 |
| 2026-06-12 12:00 |
14:57:10.17 |
-12:20:50.6 |
HIP 73213 |
10.40 |
| 2026-06-13 00:00 |
14:56:59.75 |
-12:21:19.0 |
HIP 73213 |
12.45 |
| 2026-06-13 12:00 |
14:56:49.39 |
-12:21:47.7 |
HIP 73213 |
14.65 |
| 2026-06-14 00:00 |
14:56:39.10 |
-12:22:16.7 |
HIP 73213 |
16.94 |
| 2026-06-14 12:00 |
14:56:28.88 |
-12:22:45.9 |
HIP 73213 |
19.28 |
| 2026-06-15 00:00 |
14:56:18.72 |
-12:23:15.4 |
HIP 73044 |
17.83 |
| 2026-06-15 12:00 |
14:56:08.63 |
-12:23:45.1 |
HIP 73044 |
16.27 |
| 2026-06-16 00:00 |
14:55:58.61 |
-12:24:15.2 |
HIP 73044 |
14.98 |
| 2026-06-16 12:00 |
14:55:48.66 |
-12:24:45.5 |
HIP 73044 |
14.01 |
| 2026-06-17 00:00 |
14:55:38.77 |
-12:25:16.1 |
HIP 73044 |
13.43 |
| 2026-06-17 12:00 |
14:55:28.96 |
-12:25:47.0 |
HIP 73044 |
13.28 |
| 2026-06-18 00:00 |
14:55:19.22 |
-12:26:18.1 |
HIP 73044 |
13.57 |
| 2026-06-18 12:00 |
14:55:09.55 |
-12:26:49.5 |
HIP 73044 |
14.26 |
| 2026-06-19 00:00 |
14:54:59.95 |
-12:27:21.2 |
HIP 73044 |
15.28 |
| 2026-06-19 12:00 |
14:54:50.43 |
-12:27:53.2 |
HIP 73044 |
16.58 |
| 2026-06-20 00:00 |
14:54:40.98 |
-12:28:25.5 |
HIP 73044 |
18.08 |
| 2026-06-20 12:00 |
14:54:31.60 |
-12:28:58.1 |
HIP 73044 |
19.74 |
| 2026-06-21 00:00 |
14:54:22.30 |
-12:29:30.9 |
HIP 73044 |
21.50 |
| 2026-06-21 12:00 |
14:54:13.08 |
-12:30:04.0 |
HIP 72804 |
20.79 |
| 2026-06-22 00:00 |
14:54:03.92 |
-12:30:37.5 |
HIP 72811 |
18.66 |