메타데이터
| 항목 |
값 |
| Designation |
C/2014 H1 (Christensen) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-04-15T07:54:21.663360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:53Z |
| Obs used |
105 |
| NEO |
- |
| M1 |
14.800 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-05-03.0000000 |
| e |
0.98485086 |
| q (au) |
2.138899 |
| a (au) |
141.189497 |
| i (deg) |
99.935932 |
| Ω (om, deg) |
34.701528 |
| ω (w, deg) |
169.184849 |
| M (ma, deg) |
0.010381 |
밝기
산란 + 전체 선형
$$
M_a = (18.467 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
18.467 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.651 |
| 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) |
| 2026-09-20 00:00 |
03:40:59.94 |
-23:31:31.8 |
HIP 17280 |
15.62 |
| 2026-09-20 12:00 |
03:40:57.37 |
-23:32:11.6 |
HIP 17280 |
15.86 |
| 2026-09-21 00:00 |
03:40:54.77 |
-23:32:51.3 |
HIP 17280 |
16.15 |
| 2026-09-21 12:00 |
03:40:52.13 |
-23:33:30.8 |
HIP 17280 |
16.50 |
| 2026-09-22 00:00 |
03:40:49.46 |
-23:34:10.3 |
HIP 17280 |
16.89 |
| 2026-09-22 12:00 |
03:40:46.76 |
-23:34:49.6 |
HIP 17280 |
17.33 |
| 2026-09-23 00:00 |
03:40:44.02 |
-23:35:28.8 |
HIP 17280 |
17.82 |
| 2026-09-23 12:00 |
03:40:41.24 |
-23:36:07.9 |
HIP 17280 |
18.34 |
| 2026-09-24 00:00 |
03:40:38.43 |
-23:36:46.9 |
HIP 17280 |
18.90 |
| 2026-09-24 12:00 |
03:40:35.59 |
-23:37:25.7 |
HIP 17280 |
19.49 |
| 2026-09-25 00:00 |
03:40:32.71 |
-23:38:04.4 |
HIP 17280 |
20.12 |
| 2026-09-25 12:00 |
03:40:29.80 |
-23:38:43.0 |
HIP 17280 |
20.78 |
| 2026-09-26 00:00 |
03:40:26.86 |
-23:39:21.4 |
HIP 17280 |
21.46 |
| 2026-09-26 12:00 |
03:40:23.88 |
-23:39:59.7 |
HIP 17280 |
22.17 |
| 2026-09-27 00:00 |
03:40:20.87 |
-23:40:37.8 |
HIP 17280 |
22.90 |
| 2026-09-27 12:00 |
03:40:17.83 |
-23:41:15.8 |
HIP 17280 |
23.66 |
| 2026-09-28 00:00 |
03:40:14.75 |
-23:41:53.6 |
HIP 17280 |
24.43 |
| 2026-09-28 12:00 |
03:40:11.64 |
-23:42:31.3 |
HIP 17280 |
25.23 |
| 2026-09-29 00:00 |
03:40:08.50 |
-23:43:08.8 |
HIP 17280 |
26.04 |
| 2026-09-29 12:00 |
03:40:05.32 |
-23:43:46.2 |
HIP 17025 |
26.19 |
| 2026-09-30 00:00 |
03:40:02.12 |
-23:44:23.4 |
HIP 17025 |
25.26 |
| 2026-09-30 12:00 |
03:39:58.88 |
-23:45:00.4 |
HIP 17025 |
24.34 |
| 2026-10-01 00:00 |
03:39:55.61 |
-23:45:37.3 |
HIP 17025 |
23.42 |
| 2026-10-01 12:00 |
03:39:52.31 |
-23:46:13.9 |
HIP 17025 |
22.49 |
| 2026-10-02 00:00 |
03:39:48.98 |
-23:46:50.4 |
HIP 17025 |
21.58 |
| 2026-10-02 12:00 |
03:39:45.62 |
-23:47:26.8 |
HIP 17025 |
20.66 |
| 2026-10-03 00:00 |
03:39:42.22 |
-23:48:02.9 |
HIP 17025 |
19.75 |
| 2026-10-03 12:00 |
03:39:38.80 |
-23:48:38.8 |
HIP 17025 |
18.85 |
| 2026-10-04 00:00 |
03:39:35.34 |
-23:49:14.6 |
HIP 17025 |
17.96 |
| 2026-10-04 12:00 |
03:39:31.85 |
-23:49:50.1 |
HIP 17025 |
17.08 |
| 2026-10-05 00:00 |
03:39:28.34 |
-23:50:25.5 |
HIP 17025 |
16.21 |
| 2026-10-05 12:00 |
03:39:24.79 |
-23:51:00.6 |
HIP 17025 |
15.35 |
| 2026-10-06 00:00 |
03:39:21.22 |
-23:51:35.6 |
HIP 17001 |
14.44 |
| 2026-10-06 12:00 |
03:39:17.61 |
-23:52:10.3 |
HIP 17001 |
13.48 |
| 2026-10-07 00:00 |
03:39:13.98 |
-23:52:44.8 |
HIP 17001 |
12.52 |
| 2026-10-07 12:00 |
03:39:10.31 |
-23:53:19.1 |
HIP 17001 |
11.57 |
| 2026-10-08 00:00 |
03:39:06.62 |
-23:53:53.2 |
HIP 17001 |
10.63 |
| 2026-10-08 12:00 |
03:39:02.90 |
-23:54:27.1 |
HIP 17001 |
9.70 |
| 2026-10-09 00:00 |
03:38:59.16 |
-23:55:00.7 |
HIP 17001 |
8.80 |
| 2026-10-09 12:00 |
03:38:55.38 |
-23:55:34.1 |
HIP 17001 |
7.92 |
| 2026-10-10 00:00 |
03:38:51.58 |
-23:56:07.3 |
HIP 17001 |
7.09 |
| 2026-10-10 12:00 |
03:38:47.75 |
-23:56:40.2 |
HIP 17001 |
6.32 |
| 2026-10-11 00:00 |
03:38:43.89 |
-23:57:12.9 |
HIP 17001 |
5.63 |