메타데이터
| 항목 |
값 |
| Designation |
326P/Hill |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-10-22T11:02:45.530880Z |
| Orbit solution date (soln_date, UTC) |
2024-06-14T15:42:23Z |
| Obs used |
301 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
8.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-02-09.0000000 |
| e |
0.31693822 |
| q (au) |
2.779374 |
| a (au) |
4.068993 |
| i (deg) |
2.470614 |
| Ω (om, deg) |
99.811413 |
| ω (w, deg) |
278.793743 |
| M (ma, deg) |
57.103197 |
밝기
산란 + 전체 선형
$$
M_a = (14.907 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.907 |
| n |
2.000 |
| gf |
0.828 |
| gb |
-0.500 |
| k |
0.946 |
| δ90 |
1.000 |
| 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 |
11:09:46.23 |
+07:23:28.7 |
HIP 54454 |
24.25 |
| 2026-09-20 12:00 |
11:10:11.41 |
+07:20:55.5 |
HIP 54454 |
30.83 |
| 2026-09-21 00:00 |
11:10:36.55 |
+07:18:22.4 |
HIP 54604 |
35.16 |
| 2026-09-21 12:00 |
11:11:01.67 |
+07:15:49.5 |
HIP 54604 |
38.45 |
| 2026-09-22 00:00 |
11:11:26.76 |
+07:13:16.7 |
HIP 54604 |
42.55 |
| 2026-09-22 12:00 |
11:11:51.82 |
+07:10:44.0 |
HIP 54639 |
47.23 |
| 2026-09-23 00:00 |
11:12:16.85 |
+07:08:11.6 |
HIP 54954 |
44.22 |
| 2026-09-23 12:00 |
11:12:41.85 |
+07:05:39.2 |
HIP 54954 |
37.77 |
| 2026-09-24 00:00 |
11:13:06.82 |
+07:03:07.1 |
HIP 54954 |
31.43 |
| 2026-09-24 12:00 |
11:13:31.77 |
+07:00:35.1 |
HIP 54954 |
25.27 |
| 2026-09-25 00:00 |
11:13:56.68 |
+06:58:03.3 |
HIP 54954 |
19.48 |
| 2026-09-25 12:00 |
11:14:21.56 |
+06:55:31.6 |
HIP 54954 |
14.48 |
| 2026-09-26 00:00 |
11:14:46.40 |
+06:53:00.1 |
HIP 54954 |
11.34 |
| 2026-09-26 12:00 |
11:15:11.22 |
+06:50:28.9 |
HIP 54954 |
11.68 |
| 2026-09-27 00:00 |
11:15:36.00 |
+06:47:57.8 |
HIP 54954 |
15.26 |
| 2026-09-27 12:00 |
11:16:00.75 |
+06:45:26.9 |
HIP 55124 |
17.94 |
| 2026-09-28 00:00 |
11:16:25.47 |
+06:42:56.2 |
HIP 55124 |
11.35 |
| 2026-09-28 12:00 |
11:16:50.15 |
+06:40:25.7 |
HIP 55124 |
4.88 |
| 2026-09-29 00:00 |
11:17:14.80 |
+06:37:55.4 |
HIP 55124 |
2.54 |
| 2026-09-29 12:00 |
11:17:39.41 |
+06:35:25.3 |
HIP 55124 |
8.74 |
| 2026-09-30 00:00 |
11:18:03.98 |
+06:32:55.4 |
HIP 55124 |
15.27 |
| 2026-09-30 12:00 |
11:18:28.52 |
+06:30:25.7 |
HIP 55124 |
21.83 |
| 2026-10-01 00:00 |
11:18:53.03 |
+06:27:56.3 |
HIP 55323 |
20.86 |
| 2026-10-01 12:00 |
11:19:17.49 |
+06:25:27.1 |
HIP 55323 |
15.52 |
| 2026-10-02 00:00 |
11:19:41.92 |
+06:22:58.1 |
HIP 55323 |
11.54 |
| 2026-10-02 12:00 |
11:20:06.31 |
+06:20:29.3 |
HIP 55323 |
10.55 |
| 2026-10-03 00:00 |
11:20:30.66 |
+06:18:00.8 |
HIP 55323 |
13.24 |
| 2026-10-03 12:00 |
11:20:54.97 |
+06:15:32.6 |
HIP 55434 |
14.17 |
| 2026-10-04 00:00 |
11:21:19.25 |
+06:13:04.5 |
HIP 55434 |
11.64 |
| 2026-10-04 12:00 |
11:21:43.48 |
+06:10:36.8 |
HIP 55434 |
12.45 |
| 2026-10-05 00:00 |
11:22:07.67 |
+06:08:09.3 |
HIP 55434 |
16.10 |
| 2026-10-05 12:00 |
11:22:31.81 |
+06:05:42.1 |
HIP 55599 |
19.88 |
| 2026-10-06 00:00 |
11:22:55.92 |
+06:03:15.1 |
HIP 55599 |
18.96 |
| 2026-10-06 12:00 |
11:23:19.98 |
+06:00:48.4 |
HIP 55599 |
20.18 |
| 2026-10-07 00:00 |
11:23:44.00 |
+05:58:22.0 |
HIP 55599 |
23.20 |
| 2026-10-07 12:00 |
11:24:07.97 |
+05:55:55.9 |
HIP 55733 |
19.53 |
| 2026-10-08 00:00 |
11:24:31.89 |
+05:53:30.1 |
HIP 55733 |
13.38 |
| 2026-10-08 12:00 |
11:24:55.78 |
+05:51:04.6 |
HIP 55733 |
7.73 |
| 2026-10-09 00:00 |
11:25:19.61 |
+05:48:39.4 |
HIP 55733 |
4.77 |
| 2026-10-09 12:00 |
11:25:43.39 |
+05:46:14.5 |
HIP 55778 |
1.37 |
| 2026-10-10 00:00 |
11:26:07.13 |
+05:43:49.9 |
HIP 55778 |
6.12 |
| 2026-10-10 12:00 |
11:26:30.82 |
+05:41:25.6 |
HIP 55778 |
12.41 |
| 2026-10-11 00:00 |
11:26:54.46 |
+05:39:01.7 |
HIP 55778 |
18.74 |