메타데이터
| 항목 |
값 |
| Designation |
211P/Hill |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-01-27T02:47:26.427840Z |
| Orbit solution date (soln_date, UTC) |
2024-05-14T12:42:30Z |
| Obs used |
854 |
| NEO |
- |
| M1 |
7.800 |
| K1 |
24.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-03-20.0000000 |
| e |
0.33923044 |
| q (au) |
2.351929 |
| a (au) |
3.559379 |
| i (deg) |
18.888227 |
| Ω (om, deg) |
117.272120 |
| ω (w, deg) |
4.337626 |
| M (ma, deg) |
260.471637 |
밝기
산란 + 전체 선형
$$
M_a = (11.022 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.022 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.818 |
| k |
0.999 |
| 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) |
| 2026-06-01 00:00 |
21:40:36.62 |
-18:48:52.7 |
HIP 107032 |
4.88 |
| 2026-06-01 12:00 |
21:40:39.45 |
-18:50:00.6 |
HIP 107032 |
3.89 |
| 2026-06-02 00:00 |
21:40:42.08 |
-18:51:09.7 |
HIP 107032 |
3.10 |
| 2026-06-02 12:00 |
21:40:44.51 |
-18:52:20.1 |
HIP 107032 |
2.70 |
| 2026-06-03 00:00 |
21:40:46.73 |
-18:53:31.6 |
HIP 107032 |
2.84 |
| 2026-06-03 12:00 |
21:40:48.74 |
-18:54:44.4 |
HIP 107032 |
3.45 |
| 2026-06-04 00:00 |
21:40:50.54 |
-18:55:58.3 |
HIP 107032 |
4.35 |
| 2026-06-04 12:00 |
21:40:52.14 |
-18:57:13.5 |
HIP 107032 |
5.39 |
| 2026-06-05 00:00 |
21:40:53.53 |
-18:58:29.8 |
HIP 107032 |
6.51 |
| 2026-06-05 12:00 |
21:40:54.71 |
-18:59:47.4 |
HIP 107032 |
7.67 |
| 2026-06-06 00:00 |
21:40:55.67 |
-19:01:06.1 |
HIP 107032 |
8.87 |
| 2026-06-06 12:00 |
21:40:56.43 |
-19:02:26.1 |
HIP 107032 |
10.09 |
| 2026-06-07 00:00 |
21:40:56.98 |
-19:03:47.3 |
HIP 107032 |
11.34 |
| 2026-06-07 12:00 |
21:40:57.31 |
-19:05:09.7 |
HIP 107032 |
12.60 |
| 2026-06-08 00:00 |
21:40:57.44 |
-19:06:33.2 |
HIP 107032 |
13.89 |
| 2026-06-08 12:00 |
21:40:57.35 |
-19:07:58.0 |
HIP 107032 |
15.20 |
| 2026-06-09 00:00 |
21:40:57.05 |
-19:09:24.0 |
HIP 107032 |
16.52 |
| 2026-06-09 12:00 |
21:40:56.53 |
-19:10:51.2 |
HIP 107032 |
17.87 |
| 2026-06-10 00:00 |
21:40:55.80 |
-19:12:19.6 |
HIP 107032 |
19.24 |
| 2026-06-10 12:00 |
21:40:54.86 |
-19:13:49.2 |
HIP 107032 |
20.63 |
| 2026-06-11 00:00 |
21:40:53.70 |
-19:15:19.9 |
HIP 107032 |
22.05 |
| 2026-06-11 12:00 |
21:40:52.32 |
-19:16:51.9 |
HIP 107032 |
23.50 |
| 2026-06-12 00:00 |
21:40:50.73 |
-19:18:25.1 |
HIP 107032 |
24.97 |
| 2026-06-12 12:00 |
21:40:48.93 |
-19:19:59.4 |
HIP 107032 |
26.46 |
| 2026-06-13 00:00 |
21:40:46.90 |
-19:21:34.9 |
HIP 107032 |
27.99 |
| 2026-06-13 12:00 |
21:40:44.67 |
-19:23:11.6 |
HIP 107111 |
29.03 |
| 2026-06-14 00:00 |
21:40:42.21 |
-19:24:49.5 |
HIP 107111 |
27.93 |
| 2026-06-14 12:00 |
21:40:39.54 |
-19:26:28.6 |
HIP 107111 |
26.91 |
| 2026-06-15 00:00 |
21:40:36.65 |
-19:28:08.8 |
HIP 107111 |
25.99 |
| 2026-06-15 12:00 |
21:40:33.54 |
-19:29:50.2 |
HIP 107111 |
25.18 |
| 2026-06-16 00:00 |
21:40:30.22 |
-19:31:32.7 |
HIP 106876 |
24.23 |
| 2026-06-16 12:00 |
21:40:26.68 |
-19:33:16.3 |
HIP 106876 |
23.04 |
| 2026-06-17 00:00 |
21:40:22.92 |
-19:35:01.1 |
HIP 106876 |
21.91 |
| 2026-06-17 12:00 |
21:40:18.95 |
-19:36:47.1 |
HIP 106876 |
20.84 |
| 2026-06-18 00:00 |
21:40:14.76 |
-19:38:34.1 |
HIP 106876 |
19.86 |
| 2026-06-18 12:00 |
21:40:10.35 |
-19:40:22.3 |
HIP 106876 |
19.01 |
| 2026-06-19 00:00 |
21:40:05.73 |
-19:42:11.6 |
HIP 106876 |
18.31 |
| 2026-06-19 12:00 |
21:40:00.90 |
-19:44:02.0 |
HIP 106876 |
17.80 |
| 2026-06-20 00:00 |
21:39:55.84 |
-19:45:53.5 |
HIP 106876 |
17.51 |
| 2026-06-20 12:00 |
21:39:50.58 |
-19:47:46.0 |
HIP 106876 |
17.46 |
| 2026-06-21 00:00 |
21:39:45.09 |
-19:49:39.7 |
HIP 106876 |
17.67 |
| 2026-06-21 12:00 |
21:39:39.40 |
-19:51:34.3 |
HIP 106876 |
18.16 |
| 2026-06-22 00:00 |
21:39:33.49 |
-19:53:30.1 |
HIP 106876 |
18.91 |