메타데이터
| 항목 |
값 |
| Designation |
16P/Brooks 2 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-06-14T18:26:56.207040Z |
| Orbit solution date (soln_date, UTC) |
2024-02-21T10:04:25Z |
| Obs used |
256 |
| NEO |
- |
| M1 |
12.200 |
| K1 |
13.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-06-12.0000000 |
| e |
0.56897473 |
| q (au) |
1.454508 |
| a (au) |
3.374531 |
| i (deg) |
4.306900 |
| Ω (om, deg) |
159.343017 |
| ω (w, deg) |
220.166046 |
| M (ma, deg) |
115.785261 |
밝기
산란 + 전체 선형
$$
M_a = (12.758 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.758 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.543 |
| 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) |
| 2026-06-01 00:00 |
15:48:43.78 |
-16:10:11.5 |
HIP 77334 |
20.79 |
| 2026-06-01 12:00 |
15:48:23.23 |
-16:09:12.7 |
HIP 77334 |
15.90 |
| 2026-06-02 00:00 |
15:48:02.73 |
-16:08:14.1 |
HIP 77334 |
11.16 |
| 2026-06-02 12:00 |
15:47:42.30 |
-16:07:15.9 |
HIP 77334 |
6.83 |
| 2026-06-03 00:00 |
15:47:21.94 |
-16:06:18.1 |
HIP 77334 |
4.33 |
| 2026-06-03 12:00 |
15:47:01.64 |
-16:05:20.5 |
HIP 77334 |
6.36 |
| 2026-06-04 00:00 |
15:46:41.41 |
-16:04:23.4 |
HIP 77250 |
6.74 |
| 2026-06-04 12:00 |
15:46:21.26 |
-16:03:26.6 |
HIP 77250 |
6.28 |
| 2026-06-05 00:00 |
15:46:01.18 |
-16:02:30.2 |
HIP 77250 |
9.04 |
| 2026-06-05 12:00 |
15:45:41.19 |
-16:01:34.2 |
HIP 77250 |
13.10 |
| 2026-06-06 00:00 |
15:45:21.28 |
-16:00:38.6 |
HIP 77250 |
17.58 |
| 2026-06-06 12:00 |
15:45:01.46 |
-15:59:43.5 |
HIP 77250 |
22.19 |
| 2026-06-07 00:00 |
15:44:41.73 |
-15:58:48.7 |
HIP 77060 |
20.52 |
| 2026-06-07 12:00 |
15:44:22.10 |
-15:57:54.4 |
HIP 77060 |
18.05 |
| 2026-06-08 00:00 |
15:44:02.56 |
-15:57:00.6 |
HIP 77060 |
16.65 |
| 2026-06-08 12:00 |
15:43:43.12 |
-15:56:07.2 |
HIP 76954 |
14.41 |
| 2026-06-09 00:00 |
15:43:23.79 |
-15:55:14.3 |
HIP 76954 |
10.57 |
| 2026-06-09 12:00 |
15:43:04.56 |
-15:54:21.8 |
HIP 76954 |
7.79 |
| 2026-06-10 00:00 |
15:42:45.44 |
-15:53:29.9 |
HIP 76954 |
7.32 |
| 2026-06-10 12:00 |
15:42:26.44 |
-15:52:38.5 |
HIP 76954 |
9.48 |
| 2026-06-11 00:00 |
15:42:07.55 |
-15:51:47.6 |
HIP 76954 |
12.99 |
| 2026-06-11 12:00 |
15:41:48.78 |
-15:50:57.2 |
HIP 76954 |
17.01 |
| 2026-06-12 00:00 |
15:41:30.13 |
-15:50:07.4 |
HIP 76857 |
16.74 |
| 2026-06-12 12:00 |
15:41:11.61 |
-15:49:18.1 |
HIP 76857 |
17.20 |
| 2026-06-13 00:00 |
15:40:53.22 |
-15:48:29.4 |
HIP 76857 |
18.75 |
| 2026-06-13 12:00 |
15:40:34.96 |
-15:47:41.3 |
HIP 76857 |
21.15 |
| 2026-06-14 00:00 |
15:40:16.83 |
-15:46:53.7 |
HIP 76857 |
24.13 |
| 2026-06-14 12:00 |
15:39:58.85 |
-15:46:06.8 |
HIP 76647 |
25.01 |
| 2026-06-15 00:00 |
15:39:41.00 |
-15:45:20.4 |
HIP 76647 |
23.87 |
| 2026-06-15 12:00 |
15:39:23.30 |
-15:44:34.7 |
HIP 76647 |
23.50 |
| 2026-06-16 00:00 |
15:39:05.74 |
-15:43:49.6 |
HIP 76527 |
19.54 |
| 2026-06-16 12:00 |
15:38:48.33 |
-15:43:05.1 |
HIP 76527 |
15.33 |
| 2026-06-17 00:00 |
15:38:31.08 |
-15:42:21.3 |
HIP 76527 |
11.19 |
| 2026-06-17 12:00 |
15:38:13.98 |
-15:41:38.1 |
HIP 76527 |
7.18 |
| 2026-06-18 00:00 |
15:37:57.04 |
-15:40:55.6 |
HIP 76527 |
3.60 |
| 2026-06-18 12:00 |
15:37:40.26 |
-15:40:13.8 |
HIP 76527 |
2.90 |
| 2026-06-19 00:00 |
15:37:23.64 |
-15:39:32.6 |
HIP 76527 |
6.08 |
| 2026-06-19 12:00 |
15:37:07.18 |
-15:38:52.1 |
HIP 76458 |
8.61 |
| 2026-06-20 00:00 |
15:36:50.90 |
-15:38:12.4 |
HIP 76458 |
7.41 |
| 2026-06-20 12:00 |
15:36:34.78 |
-15:37:33.3 |
HIP 76458 |
8.19 |
| 2026-06-21 00:00 |
15:36:18.83 |
-15:36:54.9 |
HIP 76458 |
10.47 |
| 2026-06-21 12:00 |
15:36:03.06 |
-15:36:17.3 |
HIP 76458 |
13.48 |
| 2026-06-22 00:00 |
15:35:47.46 |
-15:35:40.4 |
HIP 76458 |
16.80 |