메타데이터
| 항목 |
값 |
| Designation |
72P/Denning-Fujikawa |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-07-12T06:43:54.975360Z |
| Orbit solution date (soln_date, UTC) |
2023-11-14T12:33:10Z |
| Obs used |
66 |
| NEO |
Yes |
| M1 |
17.500 |
| K1 |
19.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-09-21.0000000 |
| e |
0.82045974 |
| q (au) |
0.780529 |
| a (au) |
4.347375 |
| i (deg) |
9.232915 |
| Ω (om, deg) |
35.435635 |
| ω (w, deg) |
338.472965 |
| M (ma, deg) |
47.377307 |
밝기
산란 + 전체 선형
$$
M_a = (17.746 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.746 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.871 |
| 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 |
11:48:41.65 |
+06:21:35.1 |
HIP 57676 |
18.47 |
| 2026-06-01 12:00 |
11:48:39.74 |
+06:21:18.0 |
HIP 57676 |
19.02 |
| 2026-06-02 00:00 |
11:48:37.96 |
+06:21:00.0 |
HIP 57676 |
19.56 |
| 2026-06-02 12:00 |
11:48:36.30 |
+06:20:41.3 |
HIP 57676 |
20.07 |
| 2026-06-03 00:00 |
11:48:34.78 |
+06:20:21.7 |
HIP 57676 |
20.57 |
| 2026-06-03 12:00 |
11:48:33.39 |
+06:20:01.3 |
HIP 57676 |
21.04 |
| 2026-06-04 00:00 |
11:48:32.13 |
+06:19:40.1 |
HIP 57676 |
21.50 |
| 2026-06-04 12:00 |
11:48:31.00 |
+06:19:18.1 |
HIP 57676 |
21.93 |
| 2026-06-05 00:00 |
11:48:29.99 |
+06:18:55.3 |
HIP 57676 |
22.35 |
| 2026-06-05 12:00 |
11:48:29.12 |
+06:18:31.7 |
HIP 57676 |
22.75 |
| 2026-06-06 00:00 |
11:48:28.38 |
+06:18:07.4 |
HIP 57676 |
23.13 |
| 2026-06-06 12:00 |
11:48:27.76 |
+06:17:42.2 |
HIP 57676 |
23.50 |
| 2026-06-07 00:00 |
11:48:27.27 |
+06:17:16.2 |
HIP 57676 |
23.85 |
| 2026-06-07 12:00 |
11:48:26.91 |
+06:16:49.5 |
HIP 57676 |
24.19 |
| 2026-06-08 00:00 |
11:48:26.68 |
+06:16:22.0 |
HIP 57676 |
24.52 |
| 2026-06-08 12:00 |
11:48:26.58 |
+06:15:53.7 |
HIP 57676 |
24.83 |
| 2026-06-09 00:00 |
11:48:26.61 |
+06:15:24.6 |
HIP 57676 |
25.13 |
| 2026-06-09 12:00 |
11:48:26.76 |
+06:14:54.8 |
HIP 57676 |
25.42 |
| 2026-06-10 00:00 |
11:48:27.04 |
+06:14:24.1 |
HIP 57463 |
25.67 |
| 2026-06-10 12:00 |
11:48:27.44 |
+06:13:52.8 |
HIP 57463 |
25.70 |
| 2026-06-11 00:00 |
11:48:27.97 |
+06:13:20.6 |
HIP 57463 |
25.77 |
| 2026-06-11 12:00 |
11:48:28.63 |
+06:12:47.7 |
HIP 57463 |
25.88 |
| 2026-06-12 00:00 |
11:48:29.42 |
+06:12:14.1 |
HIP 57463 |
26.04 |
| 2026-06-12 12:00 |
11:48:30.33 |
+06:11:39.6 |
HIP 57616 |
25.95 |
| 2026-06-13 00:00 |
11:48:31.36 |
+06:11:04.5 |
HIP 57616 |
25.33 |
| 2026-06-13 12:00 |
11:48:32.52 |
+06:10:28.6 |
HIP 57616 |
24.69 |
| 2026-06-14 00:00 |
11:48:33.80 |
+06:09:51.9 |
HIP 57616 |
24.04 |
| 2026-06-14 12:00 |
11:48:35.21 |
+06:09:14.5 |
HIP 57616 |
23.37 |
| 2026-06-15 00:00 |
11:48:36.74 |
+06:08:36.4 |
HIP 57616 |
22.68 |
| 2026-06-15 12:00 |
11:48:38.40 |
+06:07:57.5 |
HIP 57616 |
21.99 |
| 2026-06-16 00:00 |
11:48:40.17 |
+06:07:18.0 |
HIP 57616 |
21.28 |
| 2026-06-16 12:00 |
11:48:42.07 |
+06:06:37.7 |
HIP 57616 |
20.56 |
| 2026-06-17 00:00 |
11:48:44.10 |
+06:05:56.6 |
HIP 57616 |
19.84 |
| 2026-06-17 12:00 |
11:48:46.24 |
+06:05:14.9 |
HIP 57616 |
19.12 |
| 2026-06-18 00:00 |
11:48:48.50 |
+06:04:32.4 |
HIP 57616 |
18.40 |
| 2026-06-18 12:00 |
11:48:50.89 |
+06:03:49.3 |
HIP 57616 |
17.68 |
| 2026-06-19 00:00 |
11:48:53.39 |
+06:03:05.4 |
HIP 57616 |
16.97 |
| 2026-06-19 12:00 |
11:48:56.01 |
+06:02:20.9 |
HIP 57616 |
16.28 |
| 2026-06-20 00:00 |
11:48:58.75 |
+06:01:35.7 |
HIP 57616 |
15.62 |
| 2026-06-20 12:00 |
11:49:01.61 |
+06:00:49.7 |
HIP 57616 |
14.99 |
| 2026-06-21 00:00 |
11:49:04.59 |
+06:00:03.1 |
HIP 57616 |
14.41 |
| 2026-06-21 12:00 |
11:49:07.69 |
+05:59:15.9 |
HIP 57616 |
13.88 |
| 2026-06-22 00:00 |
11:49:10.90 |
+05:58:27.9 |
HIP 57616 |
13.42 |