메타데이터
| 항목 |
값 |
| Designation |
P/2016 P5 (COIAS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-06-01T10:27:54.313920Z |
| Orbit solution date (soln_date, UTC) |
2026-03-11T21:13:02Z |
| Obs used |
239 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
16.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2016-08-01T11:41:07.296000Z |
| Discovery magnitude (MPC) |
24.10 z |
| Discovery observatory (MPC) |
T09 · Subaru Telescope, Maunakea |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-02-06.0000000 |
| e |
0.05781852 |
| q (au) |
4.432558 |
| a (au) |
4.704569 |
| i (deg) |
7.037249 |
| Ω (om, deg) |
185.406308 |
| ω (w, deg) |
34.972005 |
| M (ma, deg) |
313.595523 |
밝기
산란 + 전체 선형
$$
M_a = (14.138 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.138 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.543 |
| 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) |
| 2026-03-26 00:00 |
22:13:12.48 |
-06:57:16.7 |
HIP 109616 |
14.70 |
| 2026-03-26 12:00 |
22:13:38.54 |
-06:54:52.7 |
HIP 109616 |
21.57 |
| 2026-03-27 00:00 |
22:14:04.54 |
-06:52:28.7 |
HIP 109849 |
14.86 |
| 2026-03-27 12:00 |
22:14:30.48 |
-06:50:04.9 |
HIP 109849 |
8.35 |
| 2026-03-28 00:00 |
22:14:56.35 |
-06:47:41.1 |
HIP 109849 |
3.60 |
| 2026-03-28 12:00 |
22:15:22.15 |
-06:45:17.5 |
HIP 109849 |
7.07 |
| 2026-03-29 00:00 |
22:15:47.89 |
-06:42:54.0 |
HIP 109849 |
13.42 |
| 2026-03-29 12:00 |
22:16:13.56 |
-06:40:30.6 |
HIP 109849 |
20.07 |
| 2026-03-30 00:00 |
22:16:39.16 |
-06:38:07.4 |
HIP 110124 |
26.75 |
| 2026-03-30 12:00 |
22:17:04.69 |
-06:35:44.3 |
HIP 110124 |
20.55 |
| 2026-03-31 00:00 |
22:17:30.15 |
-06:33:21.3 |
HIP 110124 |
14.89 |
| 2026-03-31 12:00 |
22:17:55.55 |
-06:30:58.5 |
HIP 110124 |
10.60 |
| 2026-04-01 00:00 |
22:18:20.87 |
-06:28:35.8 |
HIP 110124 |
9.69 |
| 2026-04-01 12:00 |
22:18:46.13 |
-06:26:13.2 |
HIP 110124 |
12.87 |
| 2026-04-02 00:00 |
22:19:11.31 |
-06:23:50.9 |
HIP 110124 |
18.08 |
| 2026-04-02 12:00 |
22:19:36.42 |
-06:21:28.7 |
HIP 110124 |
24.02 |
| 2026-04-03 00:00 |
22:20:01.46 |
-06:19:06.6 |
HIP 110378 |
20.97 |
| 2026-04-03 12:00 |
22:20:26.43 |
-06:16:44.7 |
HIP 110378 |
14.44 |
| 2026-04-04 00:00 |
22:20:51.33 |
-06:14:23.0 |
HIP 110378 |
8.09 |
| 2026-04-04 12:00 |
22:21:16.15 |
-06:12:01.5 |
HIP 110378 |
3.20 |
| 2026-04-05 00:00 |
22:21:40.89 |
-06:09:40.2 |
HIP 110406 |
1.83 |
| 2026-04-05 12:00 |
22:22:05.57 |
-06:07:19.1 |
HIP 110406 |
5.95 |
| 2026-04-06 00:00 |
22:22:30.16 |
-06:04:58.2 |
HIP 110406 |
12.38 |
| 2026-04-06 12:00 |
22:22:54.69 |
-06:02:37.4 |
HIP 110406 |
18.88 |
| 2026-04-07 00:00 |
22:23:19.13 |
-06:00:16.9 |
HIP 110601 |
16.81 |
| 2026-04-07 12:00 |
22:23:43.50 |
-05:57:56.6 |
HIP 110601 |
11.39 |
| 2026-04-08 00:00 |
22:24:07.79 |
-05:55:36.6 |
HIP 110601 |
7.85 |
| 2026-04-08 12:00 |
22:24:32.00 |
-05:53:16.7 |
HIP 110601 |
8.78 |
| 2026-04-09 00:00 |
22:24:56.13 |
-05:50:57.1 |
HIP 110601 |
13.25 |
| 2026-04-09 12:00 |
22:25:20.19 |
-05:48:37.7 |
HIP 110601 |
18.88 |
| 2026-04-10 00:00 |
22:25:44.16 |
-05:46:18.6 |
HIP 110601 |
24.87 |
| 2026-04-10 12:00 |
22:26:08.05 |
-05:43:59.7 |
HIP 110883 |
27.78 |
| 2026-04-11 00:00 |
22:26:31.86 |
-05:41:41.1 |
HIP 110883 |
23.55 |
| 2026-04-11 12:00 |
22:26:55.59 |
-05:39:22.7 |
HIP 110883 |
20.47 |
| 2026-04-12 00:00 |
22:27:19.24 |
-05:37:04.6 |
HIP 110883 |
19.07 |
| 2026-04-12 12:00 |
22:27:42.80 |
-05:34:46.8 |
HIP 110883 |
19.70 |
| 2026-04-13 00:00 |
22:28:06.27 |
-05:32:29.3 |
HIP 110883 |
22.16 |
| 2026-04-13 12:00 |
22:28:29.67 |
-05:30:12.1 |
HIP 110883 |
25.93 |
| 2026-04-14 00:00 |
22:28:52.97 |
-05:27:55.1 |
HIP 110883 |
30.51 |
| 2026-04-14 12:00 |
22:29:16.19 |
-05:25:38.5 |
HIP 110883 |
35.58 |
| 2026-04-15 00:00 |
22:29:39.32 |
-05:23:22.1 |
HIP 111102 |
36.43 |
| 2026-04-15 12:00 |
22:30:02.37 |
-05:21:06.1 |
HIP 111102 |
32.72 |
| 2026-04-16 00:00 |
22:30:25.32 |
-05:18:50.4 |
HIP 111102 |
29.84 |