84P/Giclas
메타데이터
| 항목 |
값 |
| Designation |
84P/Giclas |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-07-23T01:44:13.433280Z |
| Orbit solution date (soln_date, UTC) |
2021-03-29T10:00:09Z |
| Obs used |
1745 |
| NEO |
- |
| M1 |
14.200 |
| K1 |
6.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-11-29.0000000 |
| e |
0.49446792 |
| q (au) |
1.840491 |
| a (au) |
3.640700 |
| i (deg) |
7.284294 |
| Ω (om, deg) |
112.389336 |
| ω (w, deg) |
276.404790 |
| M (ma, deg) |
274.576888 |
밝기
산란 + 전체 선형
$$
M_a = (9.993 + 5.836\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.993 |
| n |
5.836 |
| gf |
1.000 |
| gb |
-0.896 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
18:53:11.93 |
-21:20:14.1 |
HIP 92747 |
11.30 |
| 2026-02-03 12:00 |
18:53:53.85 |
-21:19:41.5 |
HIP 92747 |
2.39 |
| 2026-02-04 00:00 |
18:54:35.76 |
-21:19:08.3 |
HIP 92747 |
8.66 |
| 2026-02-04 12:00 |
18:55:17.66 |
-21:18:34.5 |
HIP 92747 |
18.31 |
| 2026-02-05 00:00 |
18:55:59.54 |
-21:18:00.0 |
HIP 93085 |
26.92 |
| 2026-02-05 12:00 |
18:56:41.40 |
-21:17:24.9 |
HIP 93085 |
18.24 |
| 2026-02-06 00:00 |
18:57:23.24 |
-21:16:49.1 |
HIP 93085 |
11.47 |
| 2026-02-06 12:00 |
18:58:05.07 |
-21:16:12.7 |
HIP 93085 |
11.00 |
| 2026-02-07 00:00 |
18:58:46.87 |
-21:15:35.6 |
HIP 93213 |
6.37 |
| 2026-02-07 12:00 |
18:59:28.66 |
-21:14:57.9 |
HIP 93213 |
3.79 |
| 2026-02-08 00:00 |
19:00:10.43 |
-21:14:19.6 |
HIP 93213 |
13.36 |
| 2026-02-08 12:00 |
19:00:52.17 |
-21:13:40.7 |
HIP 93213 |
23.08 |
| 2026-02-09 00:00 |
19:01:33.90 |
-21:13:01.1 |
HIP 93213 |
32.81 |
| 2026-02-09 12:00 |
19:02:15.60 |
-21:12:20.9 |
HIP 93661 |
34.98 |
| 2026-02-10 00:00 |
19:02:57.27 |
-21:11:40.1 |
HIP 93661 |
27.96 |
| 2026-02-10 12:00 |
19:03:38.92 |
-21:10:58.6 |
HIP 93661 |
23.01 |
| 2026-02-11 00:00 |
19:04:20.55 |
-21:10:16.6 |
HIP 93661 |
21.61 |
| 2026-02-11 12:00 |
19:05:02.15 |
-21:09:33.9 |
HIP 93661 |
24.36 |
| 2026-02-12 00:00 |
19:05:43.73 |
-21:08:50.6 |
HIP 93661 |
30.14 |
| 2026-02-12 12:00 |
19:06:25.27 |
-21:08:06.8 |
HIP 94026 |
31.23 |
| 2026-02-13 00:00 |
19:07:06.79 |
-21:07:22.3 |
HIP 94026 |
21.80 |
| 2026-02-13 12:00 |
19:07:48.28 |
-21:06:37.3 |
HIP 94026 |
12.82 |
| 2026-02-14 00:00 |
19:08:29.74 |
-21:05:51.6 |
HIP 94026 |
6.45 |
| 2026-02-14 12:00 |
19:09:11.17 |
-21:05:05.4 |
HIP 94141 |
8.89 |
| 2026-02-15 00:00 |
19:09:52.56 |
-21:04:18.6 |
HIP 94141 |
3.30 |
| 2026-02-15 12:00 |
19:10:33.93 |
-21:03:31.2 |
HIP 94141 |
11.42 |
| 2026-02-16 00:00 |
19:11:15.26 |
-21:02:43.2 |
HIP 94141 |
20.91 |
| 2026-02-16 12:00 |
19:11:56.55 |
-21:01:54.7 |
HIP 94141 |
30.51 |
| 2026-02-17 00:00 |
19:12:37.81 |
-21:01:05.6 |
HIP 94550 |
30.77 |
| 2026-02-17 12:00 |
19:13:19.04 |
-21:00:16.0 |
HIP 94550 |
22.92 |
| 2026-02-18 00:00 |
19:14:00.23 |
-20:59:25.8 |
HIP 94550 |
17.06 |
| 2026-02-18 12:00 |
19:14:41.38 |
-20:58:35.0 |
HIP 94550 |
15.58 |
| 2026-02-19 00:00 |
19:15:22.49 |
-20:57:43.7 |
HIP 94550 |
19.49 |
| 2026-02-19 12:00 |
19:16:03.56 |
-20:56:51.9 |
HIP 94749 |
14.42 |
| 2026-02-20 00:00 |
19:16:44.59 |
-20:55:59.5 |
HIP 94749 |
9.42 |
| 2026-02-20 12:00 |
19:17:25.58 |
-20:55:06.6 |
HIP 94749 |
12.43 |
| 2026-02-21 00:00 |
19:18:06.53 |
-20:54:13.2 |
HIP 94948 |
16.28 |
| 2026-02-21 12:00 |
19:18:47.44 |
-20:53:19.3 |
HIP 94948 |
6.72 |
| 2026-02-22 00:00 |
19:19:28.30 |
-20:52:24.9 |
HIP 94948 |
3.03 |
| 2026-02-22 12:00 |
19:20:09.12 |
-20:51:29.9 |
HIP 94948 |
12.53 |
| 2026-02-23 00:00 |
19:20:49.89 |
-20:50:34.4 |
HIP 94948 |
22.09 |
| 2026-02-23 12:00 |
19:21:30.62 |
-20:49:38.5 |
HIP 95244 |
19.70 |
| 2026-02-24 00:00 |
19:22:11.30 |
-20:48:42.0 |
HIP 95244 |
12.20 |