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) |
| 2026-05-12 00:00 |
04:09:48.90 |
+52:14:01.3 |
HIP 19465 |
15.97 |
| 2026-05-12 12:00 |
04:09:55.29 |
+52:13:57.2 |
HIP 19465 |
15.90 |
| 2026-05-13 00:00 |
04:10:01.69 |
+52:13:53.5 |
HIP 19465 |
15.89 |
| 2026-05-13 12:00 |
04:10:08.10 |
+52:13:50.0 |
HIP 19465 |
15.94 |
| 2026-05-14 00:00 |
04:10:14.52 |
+52:13:46.8 |
HIP 19465 |
16.04 |
| 2026-05-14 12:00 |
04:10:20.95 |
+52:13:43.8 |
HIP 19465 |
16.20 |
| 2026-05-15 00:00 |
04:10:27.39 |
+52:13:41.2 |
HIP 19465 |
16.41 |
| 2026-05-15 12:00 |
04:10:33.84 |
+52:13:38.7 |
HIP 19465 |
16.67 |
| 2026-05-16 00:00 |
04:10:40.30 |
+52:13:36.6 |
HIP 19465 |
16.98 |
| 2026-05-16 12:00 |
04:10:46.76 |
+52:13:34.7 |
HIP 19465 |
17.34 |
| 2026-05-17 00:00 |
04:10:53.23 |
+52:13:33.1 |
HIP 19465 |
17.74 |
| 2026-05-17 12:00 |
04:10:59.71 |
+52:13:31.7 |
HIP 19465 |
18.19 |
| 2026-05-18 00:00 |
04:11:06.19 |
+52:13:30.6 |
HIP 19465 |
18.67 |
| 2026-05-18 12:00 |
04:11:12.68 |
+52:13:29.8 |
HIP 19465 |
19.19 |
| 2026-05-19 00:00 |
04:11:19.18 |
+52:13:29.2 |
HIP 19465 |
19.74 |
| 2026-05-19 12:00 |
04:11:25.68 |
+52:13:28.9 |
HIP 19465 |
20.32 |
| 2026-05-20 00:00 |
04:11:32.18 |
+52:13:28.8 |
HIP 19734 |
20.92 |
| 2026-05-20 12:00 |
04:11:38.69 |
+52:13:29.0 |
HIP 19734 |
19.93 |
| 2026-05-21 00:00 |
04:11:45.21 |
+52:13:29.5 |
HIP 19734 |
18.93 |
| 2026-05-21 12:00 |
04:11:51.72 |
+52:13:30.2 |
HIP 19734 |
17.94 |
| 2026-05-22 00:00 |
04:11:58.24 |
+52:13:31.2 |
HIP 19734 |
16.95 |
| 2026-05-22 12:00 |
04:12:04.76 |
+52:13:32.4 |
HIP 19734 |
15.95 |
| 2026-05-23 00:00 |
04:12:11.29 |
+52:13:33.9 |
HIP 19734 |
14.95 |
| 2026-05-23 12:00 |
04:12:17.81 |
+52:13:35.6 |
HIP 19734 |
13.96 |
| 2026-05-24 00:00 |
04:12:24.34 |
+52:13:37.6 |
HIP 19734 |
12.96 |
| 2026-05-24 12:00 |
04:12:30.86 |
+52:13:39.9 |
HIP 19734 |
11.96 |
| 2026-05-25 00:00 |
04:12:37.39 |
+52:13:42.3 |
HIP 19734 |
10.97 |
| 2026-05-25 12:00 |
04:12:43.92 |
+52:13:45.1 |
HIP 19734 |
9.97 |
| 2026-05-26 00:00 |
04:12:50.44 |
+52:13:48.1 |
HIP 19734 |
8.98 |
| 2026-05-26 12:00 |
04:12:56.97 |
+52:13:51.3 |
HIP 19734 |
7.98 |
| 2026-05-27 00:00 |
04:13:03.49 |
+52:13:54.8 |
HIP 19734 |
6.99 |
| 2026-05-27 12:00 |
04:13:10.02 |
+52:13:58.5 |
HIP 19734 |
5.99 |
| 2026-05-28 00:00 |
04:13:16.54 |
+52:14:02.5 |
HIP 19734 |
5.00 |
| 2026-05-28 12:00 |
04:13:23.06 |
+52:14:06.7 |
HIP 19734 |
4.02 |
| 2026-05-29 00:00 |
04:13:29.58 |
+52:14:11.2 |
HIP 19734 |
3.04 |
| 2026-05-29 12:00 |
04:13:36.09 |
+52:14:15.9 |
HIP 19734 |
2.08 |
| 2026-05-30 00:00 |
04:13:42.60 |
+52:14:20.9 |
HIP 19734 |
1.19 |
| 2026-05-30 12:00 |
04:13:49.11 |
+52:14:26.1 |
HIP 19734 |
0.71 |
| 2026-05-31 00:00 |
04:13:55.61 |
+52:14:31.5 |
HIP 19734 |
1.26 |
| 2026-05-31 12:00 |
04:14:02.11 |
+52:14:37.2 |
HIP 19734 |
2.16 |
| 2026-06-01 00:00 |
04:14:08.60 |
+52:14:43.1 |
HIP 19734 |
3.12 |
| 2026-06-01 12:00 |
04:14:15.09 |
+52:14:49.3 |
HIP 19734 |
4.09 |
| 2026-06-02 00:00 |
04:14:21.57 |
+52:14:55.6 |
HIP 19734 |
5.08 |