메타데이터
| 항목 |
값 |
| Designation |
C/2020 Q1 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2020-08-14T15:47:50.138880Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:44:52Z |
| Obs used |
280 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
41.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2020-08-17T23:14:45.312000Z |
| Discovery magnitude (MPC) |
17.80 R |
| Discovery observatory (MPC) |
L51 · MARGO, Nauchnyi |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-09-06.0000000 |
| e |
0.97788684 |
| q (au) |
1.314974 |
| a (au) |
59.465667 |
| i (deg) |
142.923814 |
| Ω (om, deg) |
52.379273 |
| ω (w, deg) |
9.884895 |
| M (ma, deg) |
0.048020 |
밝기
산란 + 전체 선형
$$
M_a = (15.650 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.650 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-09-20 00:00 |
16:22:31.18 |
-09:38:55.2 |
HIP 80396 |
32.78 |
| 2026-09-20 12:00 |
16:22:33.09 |
-09:39:25.2 |
HIP 80396 |
32.18 |
| 2026-09-21 00:00 |
16:22:35.05 |
-09:39:55.3 |
HIP 80396 |
31.56 |
| 2026-09-21 12:00 |
16:22:37.06 |
-09:40:25.3 |
HIP 80396 |
30.94 |
| 2026-09-22 00:00 |
16:22:39.12 |
-09:40:55.4 |
HIP 80396 |
30.30 |
| 2026-09-22 12:00 |
16:22:41.24 |
-09:41:25.6 |
HIP 80396 |
29.66 |
| 2026-09-23 00:00 |
16:22:43.41 |
-09:41:55.7 |
HIP 80396 |
29.01 |
| 2026-09-23 12:00 |
16:22:45.62 |
-09:42:25.9 |
HIP 80396 |
28.35 |
| 2026-09-24 00:00 |
16:22:47.89 |
-09:42:56.1 |
HIP 80396 |
27.69 |
| 2026-09-24 12:00 |
16:22:50.21 |
-09:43:26.3 |
HIP 80396 |
27.01 |
| 2026-09-25 00:00 |
16:22:52.59 |
-09:43:56.5 |
HIP 80396 |
26.33 |
| 2026-09-25 12:00 |
16:22:55.01 |
-09:44:26.8 |
HIP 80396 |
25.64 |
| 2026-09-26 00:00 |
16:22:57.48 |
-09:44:57.0 |
HIP 80396 |
24.95 |
| 2026-09-26 12:00 |
16:23:00.00 |
-09:45:27.3 |
HIP 80396 |
24.25 |
| 2026-09-27 00:00 |
16:23:02.57 |
-09:45:57.6 |
HIP 80396 |
23.54 |
| 2026-09-27 12:00 |
16:23:05.19 |
-09:46:27.9 |
HIP 80396 |
22.83 |
| 2026-09-28 00:00 |
16:23:07.86 |
-09:46:58.2 |
HIP 80396 |
22.11 |
| 2026-09-28 12:00 |
16:23:10.57 |
-09:47:28.6 |
HIP 80396 |
21.39 |
| 2026-09-29 00:00 |
16:23:13.34 |
-09:47:58.9 |
HIP 80396 |
20.67 |
| 2026-09-29 12:00 |
16:23:16.15 |
-09:48:29.2 |
HIP 80396 |
19.94 |
| 2026-09-30 00:00 |
16:23:19.01 |
-09:48:59.6 |
HIP 80396 |
19.21 |
| 2026-09-30 12:00 |
16:23:21.92 |
-09:49:29.9 |
HIP 80396 |
18.49 |
| 2026-10-01 00:00 |
16:23:24.88 |
-09:50:00.3 |
HIP 80396 |
17.76 |
| 2026-10-01 12:00 |
16:23:27.88 |
-09:50:30.6 |
HIP 80396 |
17.04 |
| 2026-10-02 00:00 |
16:23:30.93 |
-09:51:00.9 |
HIP 80396 |
16.33 |
| 2026-10-02 12:00 |
16:23:34.03 |
-09:51:31.3 |
HIP 80396 |
15.62 |
| 2026-10-03 00:00 |
16:23:37.18 |
-09:52:01.6 |
HIP 80396 |
14.93 |
| 2026-10-03 12:00 |
16:23:40.37 |
-09:52:31.9 |
HIP 80396 |
14.25 |
| 2026-10-04 00:00 |
16:23:43.60 |
-09:53:02.2 |
HIP 80396 |
13.59 |
| 2026-10-04 12:00 |
16:23:46.88 |
-09:53:32.5 |
HIP 80396 |
12.95 |
| 2026-10-05 00:00 |
16:23:50.21 |
-09:54:02.8 |
HIP 80396 |
12.35 |
| 2026-10-05 12:00 |
16:23:53.58 |
-09:54:33.0 |
HIP 80396 |
11.78 |
| 2026-10-06 00:00 |
16:23:57.00 |
-09:55:03.3 |
HIP 80396 |
11.25 |
| 2026-10-06 12:00 |
16:24:00.46 |
-09:55:33.5 |
HIP 80396 |
10.79 |
| 2026-10-07 00:00 |
16:24:03.97 |
-09:56:03.7 |
HIP 80396 |
10.38 |
| 2026-10-07 12:00 |
16:24:07.52 |
-09:56:33.9 |
HIP 80396 |
10.06 |
| 2026-10-08 00:00 |
16:24:11.11 |
-09:57:04.0 |
HIP 80396 |
9.81 |
| 2026-10-08 12:00 |
16:24:14.75 |
-09:57:34.2 |
HIP 80396 |
9.67 |
| 2026-10-09 00:00 |
16:24:18.43 |
-09:58:04.3 |
HIP 80396 |
9.62 |
| 2026-10-09 12:00 |
16:24:22.15 |
-09:58:34.3 |
HIP 80396 |
9.69 |
| 2026-10-10 00:00 |
16:24:25.91 |
-09:59:04.4 |
HIP 80396 |
9.86 |
| 2026-10-10 12:00 |
16:24:29.72 |
-09:59:34.4 |
HIP 80396 |
10.13 |
| 2026-10-11 00:00 |
16:24:33.57 |
-10:00:04.3 |
HIP 80396 |
10.50 |