메타데이터
| 항목 |
값 |
| Designation |
C/2020 F5 (MASTER) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-03-22T10:15:53.521920Z |
| Orbit solution date (soln_date, UTC) |
2024-10-31T13:12:14Z |
| Obs used |
1861 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
7.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-03-27.0000000 |
| e |
0.99509246 |
| q (au) |
4.324799 |
| a (au) |
881.256429 |
| i (deg) |
52.256923 |
| Ω (om, deg) |
350.527461 |
| ω (w, deg) |
310.997698 |
| M (ma, deg) |
0.013924 |
밝기
산란 + 전체 선형
$$
M_a = (5.786 + 3.334\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.786 |
| n |
3.334 |
| 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) |
| 2026-03-26 00:00 |
00:53:11.90 |
+52:09:10.8 |
HIP 4112 |
8.68 |
| 2026-03-26 12:00 |
00:53:25.88 |
+52:09:55.5 |
HIP 4112 |
9.37 |
| 2026-03-27 00:00 |
00:53:39.86 |
+52:10:40.9 |
HIP 4112 |
10.51 |
| 2026-03-27 12:00 |
00:53:53.86 |
+52:11:27.1 |
HIP 4112 |
11.97 |
| 2026-03-28 00:00 |
00:54:07.87 |
+52:12:13.9 |
HIP 4112 |
13.65 |
| 2026-03-28 12:00 |
00:54:21.89 |
+52:13:01.4 |
HIP 4112 |
15.48 |
| 2026-03-29 00:00 |
00:54:35.92 |
+52:13:49.5 |
HIP 4112 |
17.42 |
| 2026-03-29 12:00 |
00:54:49.96 |
+52:14:38.4 |
HIP 4112 |
19.44 |
| 2026-03-30 00:00 |
00:55:04.01 |
+52:15:27.9 |
HIP 4393 |
17.92 |
| 2026-03-30 12:00 |
00:55:18.06 |
+52:16:18.1 |
HIP 4393 |
15.97 |
| 2026-03-31 00:00 |
00:55:32.13 |
+52:17:08.9 |
HIP 4393 |
14.11 |
| 2026-03-31 12:00 |
00:55:46.20 |
+52:18:00.5 |
HIP 4393 |
12.40 |
| 2026-04-01 00:00 |
00:56:00.28 |
+52:18:52.7 |
HIP 4393 |
10.91 |
| 2026-04-01 12:00 |
00:56:14.36 |
+52:19:45.5 |
HIP 4393 |
9.73 |
| 2026-04-02 00:00 |
00:56:28.45 |
+52:20:39.0 |
HIP 4393 |
8.99 |
| 2026-04-02 12:00 |
00:56:42.55 |
+52:21:33.2 |
HIP 4393 |
8.82 |
| 2026-04-03 00:00 |
00:56:56.65 |
+52:22:28.0 |
HIP 4477 |
8.84 |
| 2026-04-03 12:00 |
00:57:10.75 |
+52:23:23.5 |
HIP 4477 |
9.11 |
| 2026-04-04 00:00 |
00:57:24.86 |
+52:24:19.6 |
HIP 4477 |
9.95 |
| 2026-04-04 12:00 |
00:57:38.97 |
+52:25:16.3 |
HIP 4477 |
11.25 |
| 2026-04-05 00:00 |
00:57:53.09 |
+52:26:13.7 |
HIP 4600 |
10.97 |
| 2026-04-05 12:00 |
00:58:07.20 |
+52:27:11.8 |
HIP 4600 |
8.61 |
| 2026-04-06 00:00 |
00:58:21.32 |
+52:28:10.4 |
HIP 4600 |
6.26 |
| 2026-04-06 12:00 |
00:58:35.44 |
+52:29:09.8 |
HIP 4600 |
3.90 |
| 2026-04-07 00:00 |
00:58:49.55 |
+52:30:09.7 |
HIP 4600 |
1.56 |
| 2026-04-07 12:00 |
00:59:03.67 |
+52:31:10.3 |
HIP 4600 |
0.95 |
| 2026-04-08 00:00 |
00:59:17.79 |
+52:32:11.5 |
HIP 4600 |
3.26 |
| 2026-04-08 12:00 |
00:59:31.90 |
+52:33:13.3 |
HIP 4600 |
5.63 |
| 2026-04-09 00:00 |
00:59:46.01 |
+52:34:15.8 |
HIP 4600 |
8.01 |
| 2026-04-09 12:00 |
01:00:00.12 |
+52:35:18.9 |
HIP 4600 |
10.39 |
| 2026-04-10 00:00 |
01:00:14.23 |
+52:36:22.6 |
HIP 4600 |
12.78 |
| 2026-04-10 12:00 |
01:00:28.33 |
+52:37:26.9 |
HIP 4600 |
15.17 |
| 2026-04-11 00:00 |
01:00:42.43 |
+52:38:31.8 |
HIP 4600 |
17.57 |
| 2026-04-11 12:00 |
01:00:56.52 |
+52:39:37.4 |
HIP 4875 |
19.35 |
| 2026-04-12 00:00 |
01:01:10.60 |
+52:40:43.5 |
HIP 4875 |
16.98 |
| 2026-04-12 12:00 |
01:01:24.68 |
+52:41:50.3 |
HIP 4875 |
14.61 |
| 2026-04-13 00:00 |
01:01:38.76 |
+52:42:57.6 |
HIP 4875 |
12.26 |
| 2026-04-13 12:00 |
01:01:52.82 |
+52:44:05.6 |
HIP 4875 |
9.93 |
| 2026-04-14 00:00 |
01:02:06.88 |
+52:45:14.1 |
HIP 4875 |
7.64 |
| 2026-04-14 12:00 |
01:02:20.93 |
+52:46:23.3 |
HIP 4875 |
5.46 |
| 2026-04-15 00:00 |
01:02:34.96 |
+52:47:33.0 |
HIP 4875 |
3.58 |
| 2026-04-15 12:00 |
01:02:48.99 |
+52:48:43.3 |
HIP 4875 |
2.73 |
| 2026-04-16 00:00 |
01:03:03.01 |
+52:49:54.2 |
HIP 4875 |
3.71 |