메타데이터
| 항목 |
값 |
| Designation |
C/2020 N1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-03-12T05:28:54.451200Z |
| Orbit solution date (soln_date, UTC) |
2022-04-08T01:42:44Z |
| Obs used |
856 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-07-03T13:50:17.635200Z |
| Discovery magnitude (MPC) |
20.75 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-11-27.0000000 |
| e |
1.00050582 |
| q (au) |
1.320692 |
| a (au) |
-2610.973764 |
| i (deg) |
29.703772 |
| Ω (om, deg) |
279.981658 |
| ω (w, deg) |
186.772725 |
| M (ma, deg) |
-0.000777 |
밝기
산란 + 전체 선형
$$
M_a = (16.174 + 3.247\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.174 |
| n |
3.247 |
| gf |
1.000 |
| gb |
-0.862 |
| 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) |
| 2026-07-29 00:00 |
16:40:26.10 |
-35:39:19.5 |
HIP 81639 |
3.05 |
| 2026-07-29 12:00 |
16:40:21.83 |
-35:38:45.6 |
HIP 81639 |
4.08 |
| 2026-07-30 00:00 |
16:40:17.63 |
-35:38:11.8 |
HIP 81639 |
5.11 |
| 2026-07-30 12:00 |
16:40:13.50 |
-35:37:37.9 |
HIP 81639 |
6.12 |
| 2026-07-31 00:00 |
16:40:09.44 |
-35:37:04.1 |
HIP 81639 |
7.12 |
| 2026-07-31 12:00 |
16:40:05.45 |
-35:36:30.2 |
HIP 81639 |
8.10 |
| 2026-08-01 00:00 |
16:40:01.53 |
-35:35:56.4 |
HIP 81639 |
9.08 |
| 2026-08-01 12:00 |
16:39:57.68 |
-35:35:22.6 |
HIP 81639 |
10.04 |
| 2026-08-02 00:00 |
16:39:53.90 |
-35:34:48.8 |
HIP 81639 |
11.00 |
| 2026-08-02 12:00 |
16:39:50.19 |
-35:34:15.1 |
HIP 81639 |
11.94 |
| 2026-08-03 00:00 |
16:39:46.55 |
-35:33:41.4 |
HIP 81639 |
12.87 |
| 2026-08-03 12:00 |
16:39:42.99 |
-35:33:07.7 |
HIP 81639 |
13.78 |
| 2026-08-04 00:00 |
16:39:39.49 |
-35:32:34.0 |
HIP 81639 |
14.69 |
| 2026-08-04 12:00 |
16:39:36.07 |
-35:32:00.4 |
HIP 81639 |
15.58 |
| 2026-08-05 00:00 |
16:39:32.72 |
-35:31:26.8 |
HIP 81603 |
16.37 |
| 2026-08-05 12:00 |
16:39:29.44 |
-35:30:53.2 |
HIP 81603 |
16.03 |
| 2026-08-06 00:00 |
16:39:26.24 |
-35:30:19.7 |
HIP 81603 |
15.71 |
| 2026-08-06 12:00 |
16:39:23.10 |
-35:29:46.2 |
HIP 81603 |
15.44 |
| 2026-08-07 00:00 |
16:39:20.04 |
-35:29:12.8 |
HIP 81603 |
15.20 |
| 2026-08-07 12:00 |
16:39:17.05 |
-35:28:39.5 |
HIP 81603 |
15.00 |
| 2026-08-08 00:00 |
16:39:14.14 |
-35:28:06.1 |
HIP 81603 |
14.83 |
| 2026-08-08 12:00 |
16:39:11.30 |
-35:27:32.9 |
HIP 81603 |
14.70 |
| 2026-08-09 00:00 |
16:39:08.53 |
-35:26:59.7 |
HIP 81603 |
14.61 |
| 2026-08-09 12:00 |
16:39:05.84 |
-35:26:26.5 |
HIP 81603 |
14.54 |
| 2026-08-10 00:00 |
16:39:03.22 |
-35:25:53.4 |
HIP 81603 |
14.51 |
| 2026-08-10 12:00 |
16:39:00.67 |
-35:25:20.4 |
HIP 81603 |
14.51 |
| 2026-08-11 00:00 |
16:38:58.20 |
-35:24:47.5 |
HIP 81603 |
14.54 |
| 2026-08-11 12:00 |
16:38:55.80 |
-35:24:14.6 |
HIP 81603 |
14.59 |
| 2026-08-12 00:00 |
16:38:53.48 |
-35:23:41.8 |
HIP 81603 |
14.67 |
| 2026-08-12 12:00 |
16:38:51.23 |
-35:23:09.1 |
HIP 81603 |
14.77 |
| 2026-08-13 00:00 |
16:38:49.06 |
-35:22:36.4 |
HIP 81603 |
14.89 |
| 2026-08-13 12:00 |
16:38:46.96 |
-35:22:03.9 |
HIP 81603 |
15.03 |
| 2026-08-14 00:00 |
16:38:44.94 |
-35:21:31.4 |
HIP 81603 |
15.19 |
| 2026-08-14 12:00 |
16:38:43.00 |
-35:20:59.0 |
HIP 81603 |
15.36 |
| 2026-08-15 00:00 |
16:38:41.12 |
-35:20:26.7 |
HIP 81603 |
15.54 |
| 2026-08-15 12:00 |
16:38:39.33 |
-35:19:54.4 |
HIP 81603 |
15.74 |
| 2026-08-16 00:00 |
16:38:37.61 |
-35:19:22.3 |
HIP 81603 |
15.94 |
| 2026-08-16 12:00 |
16:38:35.96 |
-35:18:50.3 |
HIP 81603 |
16.16 |
| 2026-08-17 00:00 |
16:38:34.39 |
-35:18:18.3 |
HIP 81603 |
16.38 |
| 2026-08-17 12:00 |
16:38:32.90 |
-35:17:46.5 |
HIP 81603 |
16.60 |
| 2026-08-18 00:00 |
16:38:31.48 |
-35:17:14.8 |
HIP 81603 |
16.83 |
| 2026-08-18 12:00 |
16:38:30.13 |
-35:16:43.1 |
HIP 81603 |
17.06 |
| 2026-08-19 00:00 |
16:38:28.86 |
-35:16:11.6 |
HIP 81603 |
17.30 |