메타데이터
| 항목 |
값 |
| Designation |
C/2015 W1 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-05-17T04:39:36.486720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:17Z |
| Obs used |
355 |
| NEO |
- |
| M1 |
12.700 |
| K1 |
9.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-01-02.0000000 |
| e |
1.00128700 |
| q (au) |
2.231883 |
| a (au) |
-1734.174037 |
| i (deg) |
87.318151 |
| Ω (om, deg) |
114.314858 |
| ω (w, deg) |
48.113799 |
| M (ma, deg) |
-0.001859 |
밝기
산란 + 전체 선형
$$
M_a = (14.313 + 2.054\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.313 |
| n |
2.054 |
| gf |
0.982 |
| gb |
-0.916 |
| k |
0.999 |
| δ90 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
20:08:36.02 |
-33:19:30.0 |
HIP 99286 |
8.58 |
| 2026-05-12 12:00 |
20:08:34.06 |
-33:19:57.7 |
HIP 99286 |
8.85 |
| 2026-05-13 00:00 |
20:08:32.07 |
-33:20:25.5 |
HIP 99286 |
9.17 |
| 2026-05-13 12:00 |
20:08:30.02 |
-33:20:53.5 |
HIP 99286 |
9.53 |
| 2026-05-14 00:00 |
20:08:27.93 |
-33:21:21.4 |
HIP 99286 |
9.92 |
| 2026-05-14 12:00 |
20:08:25.79 |
-33:21:49.5 |
HIP 99286 |
10.35 |
| 2026-05-15 00:00 |
20:08:23.60 |
-33:22:17.6 |
HIP 99286 |
10.81 |
| 2026-05-15 12:00 |
20:08:21.37 |
-33:22:45.8 |
HIP 99286 |
11.29 |
| 2026-05-16 00:00 |
20:08:19.09 |
-33:23:14.1 |
HIP 99286 |
11.81 |
| 2026-05-16 12:00 |
20:08:16.76 |
-33:23:42.4 |
HIP 99286 |
12.35 |
| 2026-05-17 00:00 |
20:08:14.39 |
-33:24:10.9 |
HIP 99286 |
12.91 |
| 2026-05-17 12:00 |
20:08:11.97 |
-33:24:39.3 |
HIP 99286 |
13.50 |
| 2026-05-18 00:00 |
20:08:09.50 |
-33:25:07.9 |
HIP 99286 |
14.10 |
| 2026-05-18 12:00 |
20:08:06.99 |
-33:25:36.4 |
HIP 99286 |
14.72 |
| 2026-05-19 00:00 |
20:08:04.43 |
-33:26:05.1 |
HIP 99286 |
15.36 |
| 2026-05-19 12:00 |
20:08:01.83 |
-33:26:33.8 |
HIP 99286 |
16.01 |
| 2026-05-20 00:00 |
20:07:59.18 |
-33:27:02.6 |
HIP 99286 |
16.68 |
| 2026-05-20 12:00 |
20:07:56.49 |
-33:27:31.4 |
HIP 99286 |
17.36 |
| 2026-05-21 00:00 |
20:07:53.75 |
-33:28:00.2 |
HIP 99286 |
18.06 |
| 2026-05-21 12:00 |
20:07:50.97 |
-33:28:29.1 |
HIP 99286 |
18.77 |
| 2026-05-22 00:00 |
20:07:48.14 |
-33:28:58.1 |
HIP 99286 |
19.49 |
| 2026-05-22 12:00 |
20:07:45.27 |
-33:29:27.1 |
HIP 99286 |
20.22 |
| 2026-05-23 00:00 |
20:07:42.35 |
-33:29:56.1 |
HIP 99286 |
20.97 |
| 2026-05-23 12:00 |
20:07:39.39 |
-33:30:25.2 |
HIP 99286 |
21.72 |
| 2026-05-24 00:00 |
20:07:36.39 |
-33:30:54.3 |
HIP 99286 |
22.49 |
| 2026-05-24 12:00 |
20:07:33.35 |
-33:31:23.4 |
HIP 99286 |
23.26 |
| 2026-05-25 00:00 |
20:07:30.26 |
-33:31:52.6 |
HIP 99286 |
24.05 |
| 2026-05-25 12:00 |
20:07:27.13 |
-33:32:21.8 |
HIP 99286 |
24.84 |
| 2026-05-26 00:00 |
20:07:23.95 |
-33:32:51.1 |
HIP 99286 |
25.65 |
| 2026-05-26 12:00 |
20:07:20.74 |
-33:33:20.3 |
HIP 99286 |
26.46 |
| 2026-05-27 00:00 |
20:07:17.48 |
-33:33:49.6 |
HIP 99286 |
27.28 |
| 2026-05-27 12:00 |
20:07:14.18 |
-33:34:19.0 |
HIP 99286 |
28.12 |
| 2026-05-28 00:00 |
20:07:10.84 |
-33:34:48.3 |
HIP 98961 |
28.13 |
| 2026-05-28 12:00 |
20:07:07.46 |
-33:35:17.7 |
HIP 98961 |
27.29 |
| 2026-05-29 00:00 |
20:07:04.03 |
-33:35:47.0 |
HIP 98961 |
26.43 |
| 2026-05-29 12:00 |
20:07:00.57 |
-33:36:16.4 |
HIP 98961 |
25.57 |
| 2026-05-30 00:00 |
20:06:57.06 |
-33:36:45.8 |
HIP 98961 |
24.71 |
| 2026-05-30 12:00 |
20:06:53.52 |
-33:37:15.3 |
HIP 98961 |
23.84 |
| 2026-05-31 00:00 |
20:06:49.93 |
-33:37:44.7 |
HIP 98961 |
22.97 |
| 2026-05-31 12:00 |
20:06:46.31 |
-33:38:14.1 |
HIP 98961 |
22.09 |
| 2026-06-01 00:00 |
20:06:42.64 |
-33:38:43.6 |
HIP 98961 |
21.21 |
| 2026-06-01 12:00 |
20:06:38.94 |
-33:39:13.0 |
HIP 98961 |
20.32 |
| 2026-06-02 00:00 |
20:06:35.20 |
-33:39:42.5 |
HIP 98961 |
19.44 |