메타데이터
| 항목 |
값 |
| Designation |
369P/Hill |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-10-14T18:02:25.463040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:38Z |
| Obs used |
404 |
| NEO |
- |
| M1 |
15.900 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2018-08-10T04:19:55.200000Z |
| Discovery magnitude (MPC) |
19.00 N |
| Discovery observatory (MPC) |
J04 · ESA Optical Ground Station, Tenerife |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-03-03.0000000 |
| e |
0.55464071 |
| q (au) |
1.952852 |
| a (au) |
4.384892 |
| i (deg) |
10.318441 |
| Ω (om, deg) |
47.369507 |
| ω (w, deg) |
13.332806 |
| M (ma, deg) |
218.121804 |
밝기
산란 + 전체 선형
$$
M_a = (14.079 + 4.801\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.079 |
| n |
4.801 |
| gf |
0.800 |
| gb |
-0.671 |
| k |
0.929 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
20:41:37.54 |
-29:48:34.9 |
HIP 102025 |
20.55 |
| 2026-06-01 12:00 |
20:41:34.51 |
-29:50:10.0 |
HIP 102025 |
18.97 |
| 2026-06-02 00:00 |
20:41:31.22 |
-29:51:46.0 |
HIP 102025 |
17.37 |
| 2026-06-02 12:00 |
20:41:27.68 |
-29:53:22.7 |
HIP 102025 |
15.76 |
| 2026-06-03 00:00 |
20:41:23.89 |
-29:55:00.2 |
HIP 102025 |
14.13 |
| 2026-06-03 12:00 |
20:41:19.84 |
-29:56:38.5 |
HIP 102025 |
12.49 |
| 2026-06-04 00:00 |
20:41:15.53 |
-29:58:17.6 |
HIP 102025 |
10.88 |
| 2026-06-04 12:00 |
20:41:10.97 |
-29:59:57.5 |
HIP 102025 |
9.31 |
| 2026-06-05 00:00 |
20:41:06.15 |
-30:01:38.1 |
HIP 102025 |
7.86 |
| 2026-06-05 12:00 |
20:41:01.08 |
-30:03:19.5 |
HIP 102025 |
6.62 |
| 2026-06-06 00:00 |
20:40:55.75 |
-30:05:01.6 |
HIP 102025 |
5.79 |
| 2026-06-06 12:00 |
20:40:50.15 |
-30:06:44.4 |
HIP 102025 |
5.59 |
| 2026-06-07 00:00 |
20:40:44.31 |
-30:08:28.0 |
HIP 102025 |
6.13 |
| 2026-06-07 12:00 |
20:40:38.20 |
-30:10:12.2 |
HIP 102025 |
7.28 |
| 2026-06-08 00:00 |
20:40:31.83 |
-30:11:57.2 |
HIP 102025 |
8.84 |
| 2026-06-08 12:00 |
20:40:25.20 |
-30:13:42.8 |
HIP 102025 |
10.66 |
| 2026-06-09 00:00 |
20:40:18.32 |
-30:15:29.1 |
HIP 102025 |
12.65 |
| 2026-06-09 12:00 |
20:40:11.17 |
-30:17:16.1 |
HIP 102025 |
14.75 |
| 2026-06-10 00:00 |
20:40:03.77 |
-30:19:03.7 |
HIP 102025 |
16.96 |
| 2026-06-10 12:00 |
20:39:56.11 |
-30:20:51.9 |
HIP 102025 |
19.24 |
| 2026-06-11 00:00 |
20:39:48.18 |
-30:22:40.8 |
HIP 102025 |
21.59 |
| 2026-06-11 12:00 |
20:39:40.00 |
-30:24:30.3 |
HIP 101829 |
21.54 |
| 2026-06-12 00:00 |
20:39:31.56 |
-30:26:20.3 |
HIP 101829 |
19.14 |
| 2026-06-12 12:00 |
20:39:22.85 |
-30:28:11.0 |
HIP 101829 |
16.74 |
| 2026-06-13 00:00 |
20:39:13.89 |
-30:30:02.2 |
HIP 101829 |
14.37 |
| 2026-06-13 12:00 |
20:39:04.67 |
-30:31:53.9 |
HIP 101829 |
12.06 |
| 2026-06-14 00:00 |
20:38:55.19 |
-30:33:46.2 |
HIP 101829 |
9.91 |
| 2026-06-14 12:00 |
20:38:45.45 |
-30:35:39.0 |
HIP 101829 |
8.10 |
| 2026-06-15 00:00 |
20:38:35.46 |
-30:37:32.3 |
HIP 101829 |
6.94 |
| 2026-06-15 12:00 |
20:38:25.21 |
-30:39:26.1 |
HIP 101829 |
6.85 |
| 2026-06-16 00:00 |
20:38:14.70 |
-30:41:20.3 |
HIP 101829 |
7.91 |
| 2026-06-16 12:00 |
20:38:03.94 |
-30:43:15.0 |
HIP 101829 |
9.80 |
| 2026-06-17 00:00 |
20:37:52.92 |
-30:45:10.1 |
HIP 101829 |
12.16 |
| 2026-06-17 12:00 |
20:37:41.66 |
-30:47:05.6 |
HIP 101830 |
13.02 |
| 2026-06-18 00:00 |
20:37:30.13 |
-30:49:01.5 |
HIP 101685 |
10.97 |
| 2026-06-18 12:00 |
20:37:18.36 |
-30:50:57.7 |
HIP 101685 |
8.72 |
| 2026-06-19 00:00 |
20:37:06.34 |
-30:52:54.3 |
HIP 101685 |
7.17 |
| 2026-06-19 12:00 |
20:36:54.06 |
-30:54:51.2 |
HIP 101685 |
6.89 |
| 2026-06-20 00:00 |
20:36:41.54 |
-30:56:48.5 |
HIP 101685 |
8.07 |
| 2026-06-20 12:00 |
20:36:28.78 |
-30:58:46.0 |
HIP 101685 |
10.25 |
| 2026-06-21 00:00 |
20:36:15.76 |
-31:00:43.8 |
HIP 101685 |
12.97 |
| 2026-06-21 12:00 |
20:36:02.51 |
-31:02:41.8 |
HIP 101685 |
15.99 |
| 2026-06-22 00:00 |
20:35:49.00 |
-31:04:40.1 |
HIP 101685 |
19.19 |