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) |
| 2026-09-20 00:00 |
15:47:14.88 |
-17:18:58.8 |
HIP 77297 |
13.58 |
| 2026-09-20 12:00 |
15:47:36.56 |
-17:20:25.4 |
HIP 77343 |
13.87 |
| 2026-09-21 00:00 |
15:47:58.39 |
-17:21:52.2 |
HIP 77343 |
14.76 |
| 2026-09-21 12:00 |
15:48:20.38 |
-17:23:19.2 |
HIP 77343 |
17.40 |
| 2026-09-22 00:00 |
15:48:42.52 |
-17:24:46.4 |
HIP 77343 |
21.17 |
| 2026-09-22 12:00 |
15:49:04.81 |
-17:26:13.8 |
HIP 77590 |
20.70 |
| 2026-09-23 00:00 |
15:49:27.25 |
-17:27:41.4 |
HIP 77588 |
15.90 |
| 2026-09-23 12:00 |
15:49:49.84 |
-17:29:09.1 |
HIP 77588 |
10.46 |
| 2026-09-24 00:00 |
15:50:12.58 |
-17:30:37.1 |
HIP 77588 |
5.32 |
| 2026-09-24 12:00 |
15:50:35.46 |
-17:32:05.2 |
HIP 77588 |
3.20 |
| 2026-09-25 00:00 |
15:50:58.49 |
-17:33:33.4 |
HIP 77588 |
7.52 |
| 2026-09-25 12:00 |
15:51:21.67 |
-17:35:01.8 |
HIP 77588 |
12.97 |
| 2026-09-26 00:00 |
15:51:44.99 |
-17:36:30.4 |
HIP 77588 |
18.62 |
| 2026-09-26 12:00 |
15:52:08.46 |
-17:37:59.1 |
HIP 77744 |
24.25 |
| 2026-09-27 00:00 |
15:52:32.07 |
-17:39:28.0 |
HIP 77808 |
21.50 |
| 2026-09-27 12:00 |
15:52:55.82 |
-17:40:57.0 |
HIP 77808 |
17.88 |
| 2026-09-28 00:00 |
15:53:19.72 |
-17:42:26.1 |
HIP 77808 |
15.67 |
| 2026-09-28 12:00 |
15:53:43.75 |
-17:43:55.3 |
HIP 77808 |
15.52 |
| 2026-09-29 00:00 |
15:54:07.93 |
-17:45:24.7 |
HIP 77808 |
17.51 |
| 2026-09-29 12:00 |
15:54:32.25 |
-17:46:54.2 |
HIP 77808 |
21.08 |
| 2026-09-30 00:00 |
15:54:56.71 |
-17:48:23.7 |
HIP 78018 |
18.40 |
| 2026-09-30 12:00 |
15:55:21.31 |
-17:49:53.4 |
HIP 78018 |
13.69 |
| 2026-10-01 00:00 |
15:55:46.04 |
-17:51:23.1 |
HIP 78018 |
10.43 |
| 2026-10-01 12:00 |
15:56:10.92 |
-17:52:53.0 |
HIP 78018 |
10.21 |
| 2026-10-02 00:00 |
15:56:35.93 |
-17:54:22.9 |
HIP 78018 |
13.23 |
| 2026-10-02 12:00 |
15:57:01.08 |
-17:55:52.9 |
HIP 78018 |
17.94 |
| 2026-10-03 00:00 |
15:57:26.36 |
-17:57:23.0 |
HIP 78225 |
18.52 |
| 2026-10-03 12:00 |
15:57:51.78 |
-17:58:53.1 |
HIP 78225 |
15.85 |
| 2026-10-04 00:00 |
15:58:17.34 |
-18:00:23.3 |
HIP 78225 |
15.39 |
| 2026-10-04 12:00 |
15:58:43.03 |
-18:01:53.5 |
HIP 78314 |
16.79 |
| 2026-10-05 00:00 |
15:59:08.85 |
-18:03:23.8 |
HIP 78314 |
12.47 |
| 2026-10-05 12:00 |
15:59:34.80 |
-18:04:54.1 |
HIP 78314 |
10.44 |
| 2026-10-06 00:00 |
16:00:00.89 |
-18:06:24.5 |
HIP 78314 |
11.98 |
| 2026-10-06 12:00 |
16:00:27.11 |
-18:07:54.9 |
HIP 78314 |
16.14 |
| 2026-10-07 00:00 |
16:00:53.46 |
-18:09:25.3 |
HIP 78314 |
21.46 |
| 2026-10-07 12:00 |
16:01:19.94 |
-18:10:55.7 |
HIP 78573 |
18.67 |
| 2026-10-08 00:00 |
16:01:46.55 |
-18:12:26.1 |
HIP 78573 |
12.52 |
| 2026-10-08 12:00 |
16:02:13.29 |
-18:13:56.5 |
HIP 78573 |
7.00 |
| 2026-10-09 00:00 |
16:02:40.16 |
-18:15:26.9 |
HIP 78573 |
5.16 |
| 2026-10-09 12:00 |
16:03:07.15 |
-18:16:57.3 |
HIP 78573 |
9.52 |
| 2026-10-10 00:00 |
16:03:34.27 |
-18:18:27.7 |
HIP 78573 |
15.56 |
| 2026-10-10 12:00 |
16:04:01.52 |
-18:19:58.0 |
HIP 78785 |
19.13 |
| 2026-10-11 00:00 |
16:04:28.89 |
-18:21:28.3 |
HIP 78785 |
13.56 |