메타데이터
| 항목 |
값 |
| Designation |
C/2019 O2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-04-07T19:41:36.176640Z |
| Orbit solution date (soln_date, UTC) |
2026-06-18T16:12:18Z |
| Obs used |
588 |
| 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) |
2021-06-09.0000000 |
| e |
0.83112325 |
| q (au) |
9.682779 |
| a (au) |
57.336367 |
| i (deg) |
93.288594 |
| Ω (om, deg) |
48.305899 |
| ω (w, deg) |
129.663434 |
| M (ma, deg) |
358.483932 |
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) |
| 2026-09-20 00:00 |
14:49:31.08 |
-15:28:59.7 |
HIP 72417 |
22.08 |
| 2026-09-20 12:00 |
14:49:36.44 |
-15:30:20.5 |
HIP 72417 |
23.95 |
| 2026-09-21 00:00 |
14:49:41.85 |
-15:31:41.6 |
HIP 72417 |
25.82 |
| 2026-09-21 12:00 |
14:49:47.32 |
-15:33:02.7 |
HIP 72417 |
27.71 |
| 2026-09-22 00:00 |
14:49:52.84 |
-15:34:24.0 |
HIP 72603 |
27.97 |
| 2026-09-22 12:00 |
14:49:58.41 |
-15:35:45.5 |
HIP 72603 |
26.18 |
| 2026-09-23 00:00 |
14:50:04.04 |
-15:37:07.1 |
HIP 72603 |
24.41 |
| 2026-09-23 12:00 |
14:50:09.72 |
-15:38:28.8 |
HIP 72603 |
22.65 |
| 2026-09-24 00:00 |
14:50:15.45 |
-15:39:50.7 |
HIP 72603 |
20.92 |
| 2026-09-24 12:00 |
14:50:21.24 |
-15:41:12.7 |
HIP 72603 |
19.23 |
| 2026-09-25 00:00 |
14:50:27.07 |
-15:42:34.8 |
HIP 72603 |
17.58 |
| 2026-09-25 12:00 |
14:50:32.96 |
-15:43:57.1 |
HIP 72603 |
16.00 |
| 2026-09-26 00:00 |
14:50:38.89 |
-15:45:19.5 |
HIP 72603 |
14.51 |
| 2026-09-26 12:00 |
14:50:44.88 |
-15:46:42.0 |
HIP 72603 |
13.15 |
| 2026-09-27 00:00 |
14:50:50.91 |
-15:48:04.7 |
HIP 72603 |
11.97 |
| 2026-09-27 12:00 |
14:50:57.00 |
-15:49:27.4 |
HIP 72603 |
11.04 |
| 2026-09-28 00:00 |
14:51:03.13 |
-15:50:50.3 |
HIP 72603 |
10.41 |
| 2026-09-28 12:00 |
14:51:09.31 |
-15:52:13.4 |
HIP 72603 |
10.16 |
| 2026-09-29 00:00 |
14:51:15.53 |
-15:53:36.5 |
HIP 72603 |
10.32 |
| 2026-09-29 12:00 |
14:51:21.81 |
-15:54:59.8 |
HIP 72622 |
10.24 |
| 2026-09-30 00:00 |
14:51:28.13 |
-15:56:23.2 |
HIP 72622 |
10.46 |
| 2026-09-30 12:00 |
14:51:34.49 |
-15:57:46.7 |
HIP 72622 |
11.08 |
| 2026-10-01 00:00 |
14:51:40.90 |
-15:59:10.3 |
HIP 72622 |
12.03 |
| 2026-10-01 12:00 |
14:51:47.36 |
-16:00:34.1 |
HIP 72622 |
13.26 |
| 2026-10-02 00:00 |
14:51:53.86 |
-16:01:57.9 |
HIP 72622 |
14.69 |
| 2026-10-02 12:00 |
14:52:00.41 |
-16:03:21.9 |
HIP 72622 |
16.27 |
| 2026-10-03 00:00 |
14:52:06.99 |
-16:04:46.0 |
HIP 72622 |
17.97 |
| 2026-10-03 12:00 |
14:52:13.63 |
-16:06:10.2 |
HIP 72784 |
18.70 |
| 2026-10-04 00:00 |
14:52:20.30 |
-16:07:34.5 |
HIP 72784 |
16.89 |
| 2026-10-04 12:00 |
14:52:27.02 |
-16:08:58.9 |
HIP 72784 |
15.15 |
| 2026-10-05 00:00 |
14:52:33.78 |
-16:10:23.4 |
HIP 72784 |
13.53 |
| 2026-10-05 12:00 |
14:52:40.58 |
-16:11:48.0 |
HIP 72784 |
12.07 |
| 2026-10-06 00:00 |
14:52:47.42 |
-16:13:12.7 |
HIP 72784 |
10.85 |
| 2026-10-06 12:00 |
14:52:54.31 |
-16:14:37.5 |
HIP 72784 |
9.96 |
| 2026-10-07 00:00 |
14:53:01.23 |
-16:16:02.4 |
HIP 72784 |
9.49 |
| 2026-10-07 12:00 |
14:53:08.19 |
-16:17:27.3 |
HIP 72784 |
9.52 |
| 2026-10-08 00:00 |
14:53:15.19 |
-16:18:52.4 |
HIP 72784 |
10.05 |
| 2026-10-08 12:00 |
14:53:22.23 |
-16:20:17.6 |
HIP 72784 |
11.00 |
| 2026-10-09 00:00 |
14:53:29.31 |
-16:21:42.9 |
HIP 72873 |
9.52 |
| 2026-10-09 12:00 |
14:53:36.42 |
-16:23:08.2 |
HIP 72873 |
7.73 |
| 2026-10-10 00:00 |
14:53:43.57 |
-16:24:33.6 |
HIP 72873 |
6.22 |
| 2026-10-10 12:00 |
14:53:50.76 |
-16:25:59.2 |
HIP 72873 |
5.26 |
| 2026-10-11 00:00 |
14:53:57.98 |
-16:27:24.8 |
HIP 72873 |
5.17 |