메타데이터
| 항목 |
값 |
| Designation |
C/2013 V2 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-10-14T08:23:13.560000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:42Z |
| Obs used |
1794 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
12.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-08-22.0000000 |
| e |
1.00446231 |
| q (au) |
3.507923 |
| a (au) |
-786.122697 |
| i (deg) |
37.848377 |
| Ω (om, deg) |
48.435656 |
| ω (w, deg) |
94.462543 |
| M (ma, deg) |
-0.002386 |
밝기
산란 + 전체 선형
$$
M_a = (9.199 + 2.863\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.199 |
| n |
2.863 |
| gf |
1.000 |
| gb |
-0.867 |
| 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) |
| 2026-07-29 00:00 |
18:09:13.34 |
-52:59:31.7 |
HIP 88949 |
4.24 |
| 2026-07-29 12:00 |
18:09:07.76 |
-52:59:16.2 |
HIP 88949 |
4.85 |
| 2026-07-30 00:00 |
18:09:02.23 |
-52:59:00.4 |
HIP 88949 |
5.53 |
| 2026-07-30 12:00 |
18:08:56.74 |
-52:58:44.4 |
HIP 88949 |
6.25 |
| 2026-07-31 00:00 |
18:08:51.28 |
-52:58:28.2 |
HIP 88949 |
7.01 |
| 2026-07-31 12:00 |
18:08:45.87 |
-52:58:11.7 |
HIP 88949 |
7.79 |
| 2026-08-01 00:00 |
18:08:40.50 |
-52:57:55.0 |
HIP 88956 |
8.51 |
| 2026-08-01 12:00 |
18:08:35.17 |
-52:57:38.0 |
HIP 88956 |
9.05 |
| 2026-08-02 00:00 |
18:08:29.89 |
-52:57:20.8 |
HIP 88956 |
9.64 |
| 2026-08-02 12:00 |
18:08:24.64 |
-52:57:03.3 |
HIP 88956 |
10.25 |
| 2026-08-03 00:00 |
18:08:19.45 |
-52:56:45.6 |
HIP 88956 |
10.89 |
| 2026-08-03 12:00 |
18:08:14.29 |
-52:56:27.7 |
HIP 88956 |
11.55 |
| 2026-08-04 00:00 |
18:08:09.18 |
-52:56:09.6 |
HIP 88736 |
11.32 |
| 2026-08-04 12:00 |
18:08:04.11 |
-52:55:51.2 |
HIP 88736 |
10.63 |
| 2026-08-05 00:00 |
18:07:59.09 |
-52:55:32.6 |
HIP 88736 |
9.96 |
| 2026-08-05 12:00 |
18:07:54.11 |
-52:55:13.7 |
HIP 88736 |
9.33 |
| 2026-08-06 00:00 |
18:07:49.18 |
-52:54:54.6 |
HIP 88736 |
8.73 |
| 2026-08-06 12:00 |
18:07:44.30 |
-52:54:35.4 |
HIP 88736 |
8.18 |
| 2026-08-07 00:00 |
18:07:39.46 |
-52:54:15.8 |
HIP 88736 |
7.68 |
| 2026-08-07 12:00 |
18:07:34.67 |
-52:53:56.1 |
HIP 88736 |
7.24 |
| 2026-08-08 00:00 |
18:07:29.93 |
-52:53:36.2 |
HIP 88736 |
6.87 |
| 2026-08-08 12:00 |
18:07:25.23 |
-52:53:16.0 |
HIP 88736 |
6.58 |
| 2026-08-09 00:00 |
18:07:20.58 |
-52:52:55.7 |
HIP 88736 |
6.38 |
| 2026-08-09 12:00 |
18:07:15.99 |
-52:52:35.1 |
HIP 88736 |
6.29 |
| 2026-08-10 00:00 |
18:07:11.44 |
-52:52:14.3 |
HIP 88736 |
6.29 |
| 2026-08-10 12:00 |
18:07:06.94 |
-52:51:53.3 |
HIP 88736 |
6.39 |
| 2026-08-11 00:00 |
18:07:02.49 |
-52:51:32.1 |
HIP 88736 |
6.58 |
| 2026-08-11 12:00 |
18:06:58.09 |
-52:51:10.7 |
HIP 88736 |
6.85 |
| 2026-08-12 00:00 |
18:06:53.75 |
-52:50:49.1 |
HIP 88736 |
7.20 |
| 2026-08-12 12:00 |
18:06:49.45 |
-52:50:27.3 |
HIP 88736 |
7.61 |
| 2026-08-13 00:00 |
18:06:45.21 |
-52:50:05.3 |
HIP 88736 |
8.07 |
| 2026-08-13 12:00 |
18:06:41.01 |
-52:49:43.1 |
HIP 88736 |
8.56 |
| 2026-08-14 00:00 |
18:06:36.88 |
-52:49:20.8 |
HIP 88736 |
9.09 |
| 2026-08-14 12:00 |
18:06:32.79 |
-52:48:58.2 |
HIP 88736 |
9.65 |
| 2026-08-15 00:00 |
18:06:28.76 |
-52:48:35.5 |
HIP 88736 |
10.22 |
| 2026-08-15 12:00 |
18:06:24.78 |
-52:48:12.6 |
HIP 88736 |
10.82 |
| 2026-08-16 00:00 |
18:06:20.85 |
-52:47:49.5 |
HIP 88736 |
11.42 |
| 2026-08-16 12:00 |
18:06:16.98 |
-52:47:26.2 |
HIP 88736 |
12.04 |
| 2026-08-17 00:00 |
18:06:13.16 |
-52:47:02.8 |
HIP 88736 |
12.66 |
| 2026-08-17 12:00 |
18:06:09.39 |
-52:46:39.2 |
HIP 88736 |
13.29 |
| 2026-08-18 00:00 |
18:06:05.69 |
-52:46:15.4 |
HIP 88736 |
13.92 |
| 2026-08-18 12:00 |
18:06:02.03 |
-52:45:51.4 |
HIP 88736 |
14.55 |
| 2026-08-19 00:00 |
18:05:58.43 |
-52:45:27.3 |
HIP 88736 |
15.19 |