C/2014 R4 (Gibbs)
메타데이터
| 항목 |
값 |
| Designation |
C/2014 R4 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-10-21T12:21:03.185280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:59Z |
| Obs used |
129 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
28.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-10-17.0000000 |
| e |
0.99942874 |
| q (au) |
1.817966 |
| a (au) |
3182.405214 |
| i (deg) |
42.411578 |
| Ω (om, deg) |
279.529966 |
| ω (w, deg) |
180.840887 |
| M (ma, deg) |
359.999975 |
밝기
산란 + 전체 선형
$$
M_a = (15.263 + 4.690\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.263 |
| n |
4.690 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
17:02:46.88 |
-41:49:24.9 |
HIP 83266 |
23.94 |
| 2026-02-03 12:00 |
17:02:50.44 |
-41:49:44.0 |
HIP 83266 |
24.27 |
| 2026-02-04 00:00 |
17:02:53.95 |
-41:50:03.1 |
HIP 83266 |
24.61 |
| 2026-02-04 12:00 |
17:02:57.43 |
-41:50:22.2 |
HIP 83403 |
24.73 |
| 2026-02-05 00:00 |
17:03:00.86 |
-41:50:41.4 |
HIP 83403 |
24.48 |
| 2026-02-05 12:00 |
17:03:04.25 |
-41:51:00.7 |
HIP 83403 |
24.24 |
| 2026-02-06 00:00 |
17:03:07.60 |
-41:51:20.0 |
HIP 83403 |
24.02 |
| 2026-02-06 12:00 |
17:03:10.90 |
-41:51:39.3 |
HIP 83403 |
23.81 |
| 2026-02-07 00:00 |
17:03:14.16 |
-41:51:58.7 |
HIP 83403 |
23.62 |
| 2026-02-07 12:00 |
17:03:17.38 |
-41:52:18.2 |
HIP 83403 |
23.45 |
| 2026-02-08 00:00 |
17:03:20.56 |
-41:52:37.7 |
HIP 83403 |
23.29 |
| 2026-02-08 12:00 |
17:03:23.69 |
-41:52:57.2 |
HIP 83403 |
23.14 |
| 2026-02-09 00:00 |
17:03:26.77 |
-41:53:16.8 |
HIP 83403 |
23.01 |
| 2026-02-09 12:00 |
17:03:29.82 |
-41:53:36.4 |
HIP 83403 |
22.90 |
| 2026-02-10 00:00 |
17:03:32.81 |
-41:53:56.1 |
HIP 83403 |
22.80 |
| 2026-02-10 12:00 |
17:03:35.77 |
-41:54:15.8 |
HIP 83403 |
22.71 |
| 2026-02-11 00:00 |
17:03:38.67 |
-41:54:35.6 |
HIP 83403 |
22.64 |
| 2026-02-11 12:00 |
17:03:41.54 |
-41:54:55.3 |
HIP 83403 |
22.58 |
| 2026-02-12 00:00 |
17:03:44.35 |
-41:55:15.2 |
HIP 83403 |
22.53 |
| 2026-02-12 12:00 |
17:03:47.12 |
-41:55:35.0 |
HIP 83403 |
22.50 |
| 2026-02-13 00:00 |
17:03:49.85 |
-41:55:54.9 |
HIP 83403 |
22.48 |
| 2026-02-13 12:00 |
17:03:52.53 |
-41:56:14.8 |
HIP 83403 |
22.46 |
| 2026-02-14 00:00 |
17:03:55.16 |
-41:56:34.7 |
HIP 83403 |
22.46 |
| 2026-02-14 12:00 |
17:03:57.75 |
-41:56:54.7 |
HIP 83403 |
22.47 |
| 2026-02-15 00:00 |
17:04:00.28 |
-41:57:14.7 |
HIP 83403 |
22.49 |
| 2026-02-15 12:00 |
17:04:02.77 |
-41:57:34.7 |
HIP 83403 |
22.51 |
| 2026-02-16 00:00 |
17:04:05.22 |
-41:57:54.8 |
HIP 83403 |
22.55 |
| 2026-02-16 12:00 |
17:04:07.62 |
-41:58:14.8 |
HIP 83403 |
22.59 |
| 2026-02-17 00:00 |
17:04:09.96 |
-41:58:34.9 |
HIP 83403 |
22.64 |
| 2026-02-17 12:00 |
17:04:12.26 |
-41:58:55.0 |
HIP 83403 |
22.70 |
| 2026-02-18 00:00 |
17:04:14.52 |
-41:59:15.1 |
HIP 83403 |
22.76 |
| 2026-02-18 12:00 |
17:04:16.72 |
-41:59:35.3 |
HIP 83403 |
22.83 |
| 2026-02-19 00:00 |
17:04:18.88 |
-41:59:55.4 |
HIP 83403 |
22.90 |
| 2026-02-19 12:00 |
17:04:20.98 |
-42:00:15.6 |
HIP 83403 |
22.98 |
| 2026-02-20 00:00 |
17:04:23.04 |
-42:00:35.7 |
HIP 83403 |
23.06 |
| 2026-02-20 12:00 |
17:04:25.05 |
-42:00:55.9 |
HIP 83403 |
23.14 |
| 2026-02-21 00:00 |
17:04:27.01 |
-42:01:16.1 |
HIP 83403 |
23.23 |
| 2026-02-21 12:00 |
17:04:28.92 |
-42:01:36.3 |
HIP 83403 |
23.32 |
| 2026-02-22 00:00 |
17:04:30.78 |
-42:01:56.5 |
HIP 83403 |
23.42 |
| 2026-02-22 12:00 |
17:04:32.60 |
-42:02:16.7 |
HIP 83403 |
23.51 |
| 2026-02-23 00:00 |
17:04:34.36 |
-42:02:36.9 |
HIP 83403 |
23.61 |
| 2026-02-23 12:00 |
17:04:36.07 |
-42:02:57.1 |
HIP 83403 |
23.70 |
| 2026-02-24 00:00 |
17:04:37.73 |
-42:03:17.3 |
HIP 83403 |
23.80 |