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 |
0.997 |
| 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) |
| 2026-03-26 00:00 |
16:52:39.12 |
-09:33:11.2 |
HIP 82788 |
37.61 |
| 2026-03-26 12:00 |
16:52:35.69 |
-09:32:48.0 |
HIP 82788 |
38.35 |
| 2026-03-27 00:00 |
16:52:32.21 |
-09:32:24.8 |
HIP 82656 |
38.91 |
| 2026-03-27 12:00 |
16:52:28.65 |
-09:32:01.6 |
HIP 82656 |
39.00 |
| 2026-03-28 00:00 |
16:52:25.04 |
-09:31:38.3 |
HIP 82656 |
39.12 |
| 2026-03-28 12:00 |
16:52:21.36 |
-09:31:15.0 |
HIP 82656 |
39.27 |
| 2026-03-29 00:00 |
16:52:17.62 |
-09:30:51.6 |
HIP 82656 |
39.46 |
| 2026-03-29 12:00 |
16:52:13.82 |
-09:30:28.3 |
HIP 82656 |
39.68 |
| 2026-03-30 00:00 |
16:52:09.95 |
-09:30:04.9 |
HIP 82656 |
39.93 |
| 2026-03-30 12:00 |
16:52:06.02 |
-09:29:41.4 |
HIP 82656 |
40.22 |
| 2026-03-31 00:00 |
16:52:02.03 |
-09:29:18.0 |
HIP 82656 |
40.54 |
| 2026-03-31 12:00 |
16:51:57.98 |
-09:28:54.5 |
HIP 82656 |
40.89 |
| 2026-04-01 00:00 |
16:51:53.87 |
-09:28:31.0 |
HIP 82656 |
41.28 |
| 2026-04-01 12:00 |
16:51:49.70 |
-09:28:07.5 |
HIP 82656 |
41.71 |
| 2026-04-02 00:00 |
16:51:45.46 |
-09:27:44.0 |
HIP 82656 |
42.17 |
| 2026-04-02 12:00 |
16:51:41.17 |
-09:27:20.5 |
HIP 82327 |
42.37 |
| 2026-04-03 00:00 |
16:51:36.81 |
-09:26:56.9 |
HIP 82327 |
41.26 |
| 2026-04-03 12:00 |
16:51:32.39 |
-09:26:33.4 |
HIP 82327 |
40.14 |
| 2026-04-04 00:00 |
16:51:27.92 |
-09:26:09.8 |
HIP 82327 |
39.01 |
| 2026-04-04 12:00 |
16:51:23.38 |
-09:25:46.2 |
HIP 82327 |
37.87 |
| 2026-04-05 00:00 |
16:51:18.79 |
-09:25:22.6 |
HIP 82327 |
36.72 |
| 2026-04-05 12:00 |
16:51:14.14 |
-09:24:59.1 |
HIP 82327 |
35.56 |
| 2026-04-06 00:00 |
16:51:09.42 |
-09:24:35.5 |
HIP 82327 |
34.39 |
| 2026-04-06 12:00 |
16:51:04.65 |
-09:24:11.9 |
HIP 82327 |
33.22 |
| 2026-04-07 00:00 |
16:50:59.82 |
-09:23:48.3 |
HIP 82327 |
32.04 |
| 2026-04-07 12:00 |
16:50:54.93 |
-09:23:24.8 |
HIP 82327 |
30.86 |
| 2026-04-08 00:00 |
16:50:49.99 |
-09:23:01.2 |
HIP 82327 |
29.67 |
| 2026-04-08 12:00 |
16:50:44.99 |
-09:22:37.7 |
HIP 82327 |
28.48 |
| 2026-04-09 00:00 |
16:50:39.93 |
-09:22:14.1 |
HIP 82327 |
27.29 |
| 2026-04-09 12:00 |
16:50:34.81 |
-09:21:50.6 |
HIP 82327 |
26.11 |
| 2026-04-10 00:00 |
16:50:29.64 |
-09:21:27.1 |
HIP 82327 |
24.92 |
| 2026-04-10 12:00 |
16:50:24.41 |
-09:21:03.6 |
HIP 82327 |
23.74 |
| 2026-04-11 00:00 |
16:50:19.12 |
-09:20:40.2 |
HIP 82327 |
22.58 |
| 2026-04-11 12:00 |
16:50:13.78 |
-09:20:16.7 |
HIP 82327 |
21.42 |
| 2026-04-12 00:00 |
16:50:08.38 |
-09:19:53.3 |
HIP 82327 |
20.29 |
| 2026-04-12 12:00 |
16:50:02.93 |
-09:19:29.9 |
HIP 82327 |
19.18 |
| 2026-04-13 00:00 |
16:49:57.43 |
-09:19:06.6 |
HIP 82327 |
18.11 |
| 2026-04-13 12:00 |
16:49:51.86 |
-09:18:43.3 |
HIP 82327 |
17.08 |
| 2026-04-14 00:00 |
16:49:46.25 |
-09:18:20.0 |
HIP 82327 |
16.10 |
| 2026-04-14 12:00 |
16:49:40.58 |
-09:17:56.7 |
HIP 82327 |
15.20 |
| 2026-04-15 00:00 |
16:49:34.86 |
-09:17:33.5 |
HIP 82327 |
14.38 |
| 2026-04-15 12:00 |
16:49:29.09 |
-09:17:10.4 |
HIP 82327 |
13.67 |
| 2026-04-16 00:00 |
16:49:23.26 |
-09:16:47.3 |
HIP 82327 |
13.09 |