메타데이터
| 항목 |
값 |
| Designation |
C/2021 L3 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-02-13T15:37:30.763200Z |
| Orbit solution date (soln_date, UTC) |
2024-04-20T20:42:18Z |
| Obs used |
215 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
6.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2021-06-08T21:44:52.224000Z |
| Discovery magnitude (MPC) |
20.20 R |
| Discovery observatory (MPC) |
L51 · MARGO, Nauchnyi |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-03-04.0000000 |
| e |
1.00141430 |
| q (au) |
8.457762 |
| a (au) |
-5980.195992 |
| i (deg) |
78.580039 |
| Ω (om, deg) |
344.969335 |
| ω (w, deg) |
91.593885 |
| M (ma, deg) |
0.000039 |
밝기
산란 + 전체 선형
$$
M_a = (9.235 + 2.109\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.235 |
| n |
2.109 |
| gf |
1.000 |
| gb |
-0.975 |
| k |
1.000 |
| δ90 |
9.999 |
| 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 |
11:08:34.95 |
+24:25:50.4 |
HIP 54487 |
14.04 |
| 2026-07-29 12:00 |
11:08:41.23 |
+24:24:03.4 |
HIP 54487 |
15.55 |
| 2026-07-30 00:00 |
11:08:47.55 |
+24:22:16.6 |
HIP 54487 |
17.23 |
| 2026-07-30 12:00 |
11:08:53.90 |
+24:20:29.8 |
HIP 54487 |
19.04 |
| 2026-07-31 00:00 |
11:09:00.29 |
+24:18:43.2 |
HIP 54487 |
20.94 |
| 2026-07-31 12:00 |
11:09:06.73 |
+24:16:56.6 |
HIP 54487 |
22.92 |
| 2026-08-01 00:00 |
11:09:13.19 |
+24:15:10.2 |
HIP 54487 |
24.95 |
| 2026-08-01 12:00 |
11:09:19.70 |
+24:13:23.8 |
HIP 54487 |
27.02 |
| 2026-08-02 00:00 |
11:09:26.24 |
+24:11:37.6 |
HIP 54487 |
29.14 |
| 2026-08-02 12:00 |
11:09:32.82 |
+24:09:51.5 |
HIP 54487 |
31.28 |
| 2026-08-03 00:00 |
11:09:39.43 |
+24:08:05.5 |
HIP 54487 |
33.44 |
| 2026-08-03 12:00 |
11:09:46.08 |
+24:06:19.6 |
HIP 54487 |
35.63 |
| 2026-08-04 00:00 |
11:09:52.76 |
+24:04:33.9 |
HIP 54487 |
37.83 |
| 2026-08-04 12:00 |
11:09:59.48 |
+24:02:48.3 |
HIP 54487 |
40.05 |
| 2026-08-05 00:00 |
11:10:06.23 |
+24:01:02.8 |
HIP 54487 |
42.29 |
| 2026-08-05 12:00 |
11:10:13.02 |
+23:59:17.4 |
HIP 54487 |
44.53 |
| 2026-08-06 00:00 |
11:10:19.83 |
+23:57:32.1 |
HIP 54757 |
45.44 |
| 2026-08-06 12:00 |
11:10:26.68 |
+23:55:47.0 |
HIP 54757 |
43.09 |
| 2026-08-07 00:00 |
11:10:33.57 |
+23:54:02.1 |
HIP 54757 |
40.74 |
| 2026-08-07 12:00 |
11:10:40.48 |
+23:52:17.3 |
HIP 54757 |
38.39 |
| 2026-08-08 00:00 |
11:10:47.42 |
+23:50:32.6 |
HIP 54757 |
36.04 |
| 2026-08-08 12:00 |
11:10:54.40 |
+23:48:48.0 |
HIP 54757 |
33.68 |
| 2026-08-09 00:00 |
11:11:01.40 |
+23:47:03.7 |
HIP 54757 |
31.32 |
| 2026-08-09 12:00 |
11:11:08.44 |
+23:45:19.4 |
HIP 54757 |
28.95 |
| 2026-08-10 00:00 |
11:11:15.50 |
+23:43:35.3 |
HIP 54757 |
26.59 |
| 2026-08-10 12:00 |
11:11:22.59 |
+23:41:51.4 |
HIP 54757 |
24.22 |
| 2026-08-11 00:00 |
11:11:29.71 |
+23:40:07.7 |
HIP 54757 |
21.84 |
| 2026-08-11 12:00 |
11:11:36.86 |
+23:38:24.1 |
HIP 54757 |
19.47 |
| 2026-08-12 00:00 |
11:11:44.04 |
+23:36:40.6 |
HIP 54757 |
17.10 |
| 2026-08-12 12:00 |
11:11:51.24 |
+23:34:57.4 |
HIP 54757 |
14.72 |
| 2026-08-13 00:00 |
11:11:58.47 |
+23:33:14.3 |
HIP 54757 |
12.35 |
| 2026-08-13 12:00 |
11:12:05.72 |
+23:31:31.4 |
HIP 54757 |
9.97 |
| 2026-08-14 00:00 |
11:12:13.00 |
+23:29:48.6 |
HIP 54757 |
7.61 |
| 2026-08-14 12:00 |
11:12:20.30 |
+23:28:06.1 |
HIP 54757 |
5.26 |
| 2026-08-15 00:00 |
11:12:27.63 |
+23:26:23.7 |
HIP 54757 |
2.99 |
| 2026-08-15 12:00 |
11:12:34.98 |
+23:24:41.5 |
HIP 54757 |
1.26 |
| 2026-08-16 00:00 |
11:12:42.35 |
+23:22:59.5 |
HIP 54757 |
2.40 |
| 2026-08-16 12:00 |
11:12:49.75 |
+23:21:17.7 |
HIP 54757 |
4.62 |
| 2026-08-17 00:00 |
11:12:57.16 |
+23:19:36.1 |
HIP 54757 |
6.97 |
| 2026-08-17 12:00 |
11:13:04.60 |
+23:17:54.7 |
HIP 54757 |
9.34 |
| 2026-08-18 00:00 |
11:13:12.06 |
+23:16:13.5 |
HIP 54757 |
11.73 |
| 2026-08-18 12:00 |
11:13:19.54 |
+23:14:32.5 |
HIP 54757 |
14.12 |
| 2026-08-19 00:00 |
11:13:27.04 |
+23:12:51.8 |
HIP 54757 |
16.52 |