메타데이터
| 항목 |
값 |
| Designation |
C/2010 D4 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-03-30T22:23:21.324480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:40Z |
| Obs used |
113 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-04-12.0000000 |
| e |
0.88945973 |
| q (au) |
7.148209 |
| a (au) |
64.666104 |
| i (deg) |
105.659652 |
| Ω (om, deg) |
266.783514 |
| ω (w, deg) |
44.489319 |
| M (ma, deg) |
0.714674 |
밝기
산란 + 전체 선형
$$
M_a = (15.542 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.542 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-0.818 |
| 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) |
| 2026-07-29 00:00 |
06:00:22.84 |
+30:48:21.7 |
HIP 28517 |
17.04 |
| 2026-07-29 12:00 |
06:00:26.28 |
+30:48:19.0 |
HIP 28517 |
16.65 |
| 2026-07-30 00:00 |
06:00:29.71 |
+30:48:16.4 |
HIP 28517 |
16.29 |
| 2026-07-30 12:00 |
06:00:33.11 |
+30:48:13.9 |
HIP 28517 |
15.95 |
| 2026-07-31 00:00 |
06:00:36.49 |
+30:48:11.3 |
HIP 28517 |
15.64 |
| 2026-07-31 12:00 |
06:00:39.85 |
+30:48:08.9 |
HIP 28517 |
15.36 |
| 2026-08-01 00:00 |
06:00:43.19 |
+30:48:06.4 |
HIP 28517 |
15.11 |
| 2026-08-01 12:00 |
06:00:46.50 |
+30:48:04.0 |
HIP 28517 |
14.89 |
| 2026-08-02 00:00 |
06:00:49.79 |
+30:48:01.7 |
HIP 28517 |
14.70 |
| 2026-08-02 12:00 |
06:00:53.06 |
+30:47:59.4 |
HIP 28517 |
14.55 |
| 2026-08-03 00:00 |
06:00:56.31 |
+30:47:57.1 |
HIP 28517 |
14.42 |
| 2026-08-03 12:00 |
06:00:59.53 |
+30:47:54.9 |
HIP 28517 |
14.33 |
| 2026-08-04 00:00 |
06:01:02.73 |
+30:47:52.7 |
HIP 28517 |
14.28 |
| 2026-08-04 12:00 |
06:01:05.90 |
+30:47:50.6 |
HIP 28517 |
14.26 |
| 2026-08-05 00:00 |
06:01:09.05 |
+30:47:48.5 |
HIP 28517 |
14.26 |
| 2026-08-05 12:00 |
06:01:12.18 |
+30:47:46.5 |
HIP 28517 |
14.30 |
| 2026-08-06 00:00 |
06:01:15.28 |
+30:47:44.5 |
HIP 28517 |
14.37 |
| 2026-08-06 12:00 |
06:01:18.35 |
+30:47:42.5 |
HIP 28517 |
14.47 |
| 2026-08-07 00:00 |
06:01:21.40 |
+30:47:40.6 |
HIP 28517 |
14.60 |
| 2026-08-07 12:00 |
06:01:24.43 |
+30:47:38.7 |
HIP 28517 |
14.75 |
| 2026-08-08 00:00 |
06:01:27.43 |
+30:47:36.8 |
HIP 28517 |
14.93 |
| 2026-08-08 12:00 |
06:01:30.40 |
+30:47:35.0 |
HIP 28517 |
15.13 |
| 2026-08-09 00:00 |
06:01:33.35 |
+30:47:33.3 |
HIP 28517 |
15.35 |
| 2026-08-09 12:00 |
06:01:36.27 |
+30:47:31.6 |
HIP 28517 |
15.59 |
| 2026-08-10 00:00 |
06:01:39.16 |
+30:47:29.9 |
HIP 28517 |
15.85 |
| 2026-08-10 12:00 |
06:01:42.03 |
+30:47:28.2 |
HIP 28517 |
16.13 |
| 2026-08-11 00:00 |
06:01:44.87 |
+30:47:26.6 |
HIP 28517 |
16.42 |
| 2026-08-11 12:00 |
06:01:47.68 |
+30:47:25.1 |
HIP 28517 |
16.73 |
| 2026-08-12 00:00 |
06:01:50.47 |
+30:47:23.6 |
HIP 28517 |
17.05 |
| 2026-08-12 12:00 |
06:01:53.22 |
+30:47:22.1 |
HIP 28517 |
17.38 |
| 2026-08-13 00:00 |
06:01:55.95 |
+30:47:20.6 |
HIP 28517 |
17.71 |
| 2026-08-13 12:00 |
06:01:58.65 |
+30:47:19.2 |
HIP 28517 |
18.06 |
| 2026-08-14 00:00 |
06:02:01.32 |
+30:47:17.9 |
HIP 28517 |
18.42 |
| 2026-08-14 12:00 |
06:02:03.96 |
+30:47:16.5 |
HIP 28517 |
18.78 |
| 2026-08-15 00:00 |
06:02:06.58 |
+30:47:15.2 |
HIP 28517 |
19.14 |
| 2026-08-15 12:00 |
06:02:09.16 |
+30:47:14.0 |
HIP 28517 |
19.52 |
| 2026-08-16 00:00 |
06:02:11.72 |
+30:47:12.8 |
HIP 28517 |
19.89 |
| 2026-08-16 12:00 |
06:02:14.24 |
+30:47:11.6 |
HIP 28517 |
20.27 |
| 2026-08-17 00:00 |
06:02:16.74 |
+30:47:10.5 |
HIP 28517 |
20.65 |
| 2026-08-17 12:00 |
06:02:19.20 |
+30:47:09.3 |
HIP 28517 |
21.03 |
| 2026-08-18 00:00 |
06:02:21.64 |
+30:47:08.3 |
HIP 28517 |
21.42 |
| 2026-08-18 12:00 |
06:02:24.04 |
+30:47:07.2 |
HIP 28517 |
21.80 |
| 2026-08-19 00:00 |
06:02:26.41 |
+30:47:06.2 |
HIP 28517 |
22.19 |