메타데이터
| 항목 |
값 |
| Designation |
C/2004 H1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-01-15T07:05:39.554880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:40Z |
| Obs used |
71 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2004-04-19.0000000 |
| e |
0.99989721 |
| q (au) |
2.080742 |
| a (au) |
20242.963449 |
| i (deg) |
140.672988 |
| Ω (om, deg) |
120.046982 |
| ω (w, deg) |
290.524558 |
| M (ma, deg) |
0.000032 |
밝기
산란 + 전체 선형
$$
M_a = (17.724 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.724 |
| n |
2.000 |
| 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) |
| 2026-09-20 00:00 |
01:03:55.73 |
+50:38:59.4 |
HIP 4971 |
13.25 |
| 2026-09-20 12:00 |
01:03:51.72 |
+50:38:57.2 |
HIP 4971 |
13.13 |
| 2026-09-21 00:00 |
01:03:47.70 |
+50:38:54.7 |
HIP 4971 |
13.03 |
| 2026-09-21 12:00 |
01:03:43.67 |
+50:38:52.0 |
HIP 4971 |
12.96 |
| 2026-09-22 00:00 |
01:03:39.63 |
+50:38:49.0 |
HIP 4971 |
12.91 |
| 2026-09-22 12:00 |
01:03:35.58 |
+50:38:45.7 |
HIP 4971 |
12.90 |
| 2026-09-23 00:00 |
01:03:31.51 |
+50:38:42.1 |
HIP 4971 |
12.91 |
| 2026-09-23 12:00 |
01:03:27.43 |
+50:38:38.2 |
HIP 4971 |
12.95 |
| 2026-09-24 00:00 |
01:03:23.35 |
+50:38:34.1 |
HIP 4971 |
13.02 |
| 2026-09-24 12:00 |
01:03:19.25 |
+50:38:29.7 |
HIP 4971 |
13.11 |
| 2026-09-25 00:00 |
01:03:15.15 |
+50:38:25.1 |
HIP 4971 |
13.24 |
| 2026-09-25 12:00 |
01:03:11.03 |
+50:38:20.1 |
HIP 4971 |
13.39 |
| 2026-09-26 00:00 |
01:03:06.91 |
+50:38:14.9 |
HIP 4971 |
13.57 |
| 2026-09-26 12:00 |
01:03:02.78 |
+50:38:09.4 |
HIP 4971 |
13.77 |
| 2026-09-27 00:00 |
01:02:58.63 |
+50:38:03.6 |
HIP 4971 |
14.00 |
| 2026-09-27 12:00 |
01:02:54.49 |
+50:37:57.6 |
HIP 4971 |
14.26 |
| 2026-09-28 00:00 |
01:02:50.33 |
+50:37:51.3 |
HIP 4971 |
14.53 |
| 2026-09-28 12:00 |
01:02:46.16 |
+50:37:44.7 |
HIP 4971 |
14.83 |
| 2026-09-29 00:00 |
01:02:41.99 |
+50:37:37.9 |
HIP 4971 |
15.15 |
| 2026-09-29 12:00 |
01:02:37.81 |
+50:37:30.8 |
HIP 4971 |
15.49 |
| 2026-09-30 00:00 |
01:02:33.63 |
+50:37:23.4 |
HIP 4971 |
15.85 |
| 2026-09-30 12:00 |
01:02:29.44 |
+50:37:15.7 |
HIP 4971 |
16.23 |
| 2026-10-01 00:00 |
01:02:25.24 |
+50:37:07.8 |
HIP 4971 |
16.62 |
| 2026-10-01 12:00 |
01:02:21.03 |
+50:36:59.5 |
HIP 4971 |
17.03 |
| 2026-10-02 00:00 |
01:02:16.82 |
+50:36:51.1 |
HIP 4971 |
17.46 |
| 2026-10-02 12:00 |
01:02:12.61 |
+50:36:42.3 |
HIP 4971 |
17.90 |
| 2026-10-03 00:00 |
01:02:08.39 |
+50:36:33.3 |
HIP 4971 |
18.35 |
| 2026-10-03 12:00 |
01:02:04.17 |
+50:36:24.0 |
HIP 4971 |
18.81 |
| 2026-10-04 00:00 |
01:01:59.94 |
+50:36:14.4 |
HIP 4971 |
19.29 |
| 2026-10-04 12:00 |
01:01:55.71 |
+50:36:04.6 |
HIP 4744 |
19.12 |
| 2026-10-05 00:00 |
01:01:51.47 |
+50:35:54.5 |
HIP 4744 |
18.95 |
| 2026-10-05 12:00 |
01:01:47.24 |
+50:35:44.1 |
HIP 4744 |
18.81 |
| 2026-10-06 00:00 |
01:01:42.99 |
+50:35:33.5 |
HIP 4744 |
18.69 |
| 2026-10-06 12:00 |
01:01:38.75 |
+50:35:22.6 |
HIP 4744 |
18.61 |
| 2026-10-07 00:00 |
01:01:34.51 |
+50:35:11.4 |
HIP 4744 |
18.56 |
| 2026-10-07 12:00 |
01:01:30.26 |
+50:35:00.0 |
HIP 4744 |
18.53 |
| 2026-10-08 00:00 |
01:01:26.01 |
+50:34:48.2 |
HIP 4744 |
18.54 |
| 2026-10-08 12:00 |
01:01:21.76 |
+50:34:36.3 |
HIP 4744 |
18.57 |
| 2026-10-09 00:00 |
01:01:17.51 |
+50:34:24.0 |
HIP 4744 |
18.64 |
| 2026-10-09 12:00 |
01:01:13.26 |
+50:34:11.5 |
HIP 4744 |
18.74 |
| 2026-10-10 00:00 |
01:01:09.01 |
+50:33:58.7 |
HIP 4744 |
18.87 |
| 2026-10-10 12:00 |
01:01:04.76 |
+50:33:45.7 |
HIP 4744 |
19.03 |
| 2026-10-11 00:00 |
01:01:00.51 |
+50:33:32.4 |
HIP 4744 |
19.21 |