C/2014 F1 (Hill)
메타데이터
| 항목 |
값 |
| Designation |
C/2014 F1 (Hill) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-10-04T20:00:02.148480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:50Z |
| Obs used |
190 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-04-19.0000000 |
| e |
0.99907518 |
| q (au) |
3.496337 |
| a (au) |
3780.558013 |
| i (deg) |
108.253050 |
| Ω (om, deg) |
239.902413 |
| ω (w, deg) |
8.242943 |
| M (ma, deg) |
0.000832 |
밝기
산란 + 전체 선형
$$
M_a = (12.343 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.343 |
| n |
2.000 |
| gf |
0.983 |
| gb |
-0.854 |
| k |
1.000 |
| δ90 |
9.993 |
| 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 |
04:00:14.95 |
+53:47:35.2 |
HIP 18795 |
12.92 |
| 2026-02-03 12:00 |
04:00:12.54 |
+53:46:49.9 |
HIP 18795 |
13.52 |
| 2026-02-04 00:00 |
04:00:10.19 |
+53:46:04.7 |
HIP 18795 |
14.14 |
| 2026-02-04 12:00 |
04:00:07.91 |
+53:45:19.5 |
HIP 18795 |
14.77 |
| 2026-02-05 00:00 |
04:00:05.70 |
+53:44:34.3 |
HIP 18795 |
15.41 |
| 2026-02-05 12:00 |
04:00:03.55 |
+53:43:49.1 |
HIP 18795 |
16.06 |
| 2026-02-06 00:00 |
04:00:01.47 |
+53:43:04.0 |
HIP 18795 |
16.72 |
| 2026-02-06 12:00 |
03:59:59.45 |
+53:42:18.9 |
HIP 18795 |
17.38 |
| 2026-02-07 00:00 |
03:59:57.49 |
+53:41:33.8 |
HIP 18795 |
18.04 |
| 2026-02-07 12:00 |
03:59:55.61 |
+53:40:48.8 |
HIP 18795 |
18.71 |
| 2026-02-08 00:00 |
03:59:53.78 |
+53:40:03.8 |
HIP 18795 |
19.38 |
| 2026-02-08 12:00 |
03:59:52.03 |
+53:39:18.9 |
HIP 18795 |
20.05 |
| 2026-02-09 00:00 |
03:59:50.33 |
+53:38:34.0 |
HIP 18795 |
20.72 |
| 2026-02-09 12:00 |
03:59:48.71 |
+53:37:49.2 |
HIP 18795 |
21.39 |
| 2026-02-10 00:00 |
03:59:47.14 |
+53:37:04.5 |
HIP 18795 |
22.06 |
| 2026-02-10 12:00 |
03:59:45.65 |
+53:36:19.8 |
HIP 18795 |
22.74 |
| 2026-02-11 00:00 |
03:59:44.22 |
+53:35:35.2 |
HIP 18795 |
23.41 |
| 2026-02-11 12:00 |
03:59:42.85 |
+53:34:50.6 |
HIP 18795 |
24.07 |
| 2026-02-12 00:00 |
03:59:41.55 |
+53:34:06.1 |
HIP 18795 |
24.74 |
| 2026-02-12 12:00 |
03:59:40.32 |
+53:33:21.7 |
HIP 18795 |
25.41 |
| 2026-02-13 00:00 |
03:59:39.15 |
+53:32:37.4 |
HIP 18465 |
25.57 |
| 2026-02-13 12:00 |
03:59:38.04 |
+53:31:53.1 |
HIP 18465 |
25.46 |
| 2026-02-14 00:00 |
03:59:37.01 |
+53:31:09.0 |
HIP 18465 |
25.37 |
| 2026-02-14 12:00 |
03:59:36.03 |
+53:30:24.9 |
HIP 18465 |
25.31 |
| 2026-02-15 00:00 |
03:59:35.12 |
+53:29:40.9 |
HIP 18465 |
25.29 |
| 2026-02-15 12:00 |
03:59:34.28 |
+53:28:57.0 |
HIP 18465 |
25.29 |
| 2026-02-16 00:00 |
03:59:33.50 |
+53:28:13.2 |
HIP 18465 |
25.33 |
| 2026-02-16 12:00 |
03:59:32.79 |
+53:27:29.5 |
HIP 18465 |
25.40 |
| 2026-02-17 00:00 |
03:59:32.14 |
+53:26:45.9 |
HIP 18465 |
25.49 |
| 2026-02-17 12:00 |
03:59:31.56 |
+53:26:02.4 |
HIP 18465 |
25.62 |
| 2026-02-18 00:00 |
03:59:31.04 |
+53:25:19.0 |
HIP 18465 |
25.78 |
| 2026-02-18 12:00 |
03:59:30.59 |
+53:24:35.8 |
HIP 18465 |
25.96 |
| 2026-02-19 00:00 |
03:59:30.20 |
+53:23:52.6 |
HIP 18465 |
26.17 |
| 2026-02-19 12:00 |
03:59:29.88 |
+53:23:09.6 |
HIP 18465 |
26.40 |
| 2026-02-20 00:00 |
03:59:29.62 |
+53:22:26.7 |
HIP 18465 |
26.66 |
| 2026-02-20 12:00 |
03:59:29.42 |
+53:21:43.9 |
HIP 18712 |
26.42 |
| 2026-02-21 00:00 |
03:59:29.29 |
+53:21:01.2 |
HIP 18712 |
25.76 |
| 2026-02-21 12:00 |
03:59:29.22 |
+53:20:18.7 |
HIP 18712 |
25.10 |
| 2026-02-22 00:00 |
03:59:29.22 |
+53:19:36.3 |
HIP 18712 |
24.44 |
| 2026-02-22 12:00 |
03:59:29.28 |
+53:18:54.0 |
HIP 18712 |
23.79 |
| 2026-02-23 00:00 |
03:59:29.40 |
+53:18:11.9 |
HIP 18712 |
23.13 |
| 2026-02-23 12:00 |
03:59:29.59 |
+53:17:29.9 |
HIP 18712 |
22.48 |
| 2026-02-24 00:00 |
03:59:29.84 |
+53:16:48.0 |
HIP 18712 |
21.82 |