메타데이터
| 항목 |
값 |
| Designation |
C/2006 WD4 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-04-28T09:33:26.683200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:02Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-01-20.0000000 |
| e |
0.99898724 |
| q (au) |
0.591244 |
| a (au) |
583.797842 |
| i (deg) |
152.704616 |
| Ω (om, deg) |
226.790541 |
| ω (w, deg) |
292.690897 |
| M (ma, deg) |
359.993125 |
밝기
산란 + 전체 선형
$$
M_a = (13.923 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.923 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
09:06:48.37 |
+44:23:43.0 |
HIP 44606 |
17.20 |
| 2026-06-01 12:00 |
09:06:49.98 |
+44:23:20.0 |
HIP 44606 |
17.61 |
| 2026-06-02 00:00 |
09:06:51.61 |
+44:22:56.9 |
HIP 44606 |
18.03 |
| 2026-06-02 12:00 |
09:06:53.28 |
+44:22:33.8 |
HIP 44606 |
18.45 |
| 2026-06-03 00:00 |
09:06:54.97 |
+44:22:10.7 |
HIP 44606 |
18.89 |
| 2026-06-03 12:00 |
09:06:56.70 |
+44:21:47.7 |
HIP 44606 |
19.33 |
| 2026-06-04 00:00 |
09:06:58.45 |
+44:21:24.6 |
HIP 44606 |
19.77 |
| 2026-06-04 12:00 |
09:07:00.22 |
+44:21:01.5 |
HIP 44606 |
20.23 |
| 2026-06-05 00:00 |
09:07:02.03 |
+44:20:38.5 |
HIP 44606 |
20.69 |
| 2026-06-05 12:00 |
09:07:03.86 |
+44:20:15.5 |
HIP 44606 |
21.16 |
| 2026-06-06 00:00 |
09:07:05.72 |
+44:19:52.4 |
HIP 44606 |
21.63 |
| 2026-06-06 12:00 |
09:07:07.61 |
+44:19:29.4 |
HIP 44606 |
22.11 |
| 2026-06-07 00:00 |
09:07:09.53 |
+44:19:06.4 |
HIP 44606 |
22.59 |
| 2026-06-07 12:00 |
09:07:11.47 |
+44:18:43.4 |
HIP 44606 |
23.08 |
| 2026-06-08 00:00 |
09:07:13.44 |
+44:18:20.5 |
HIP 44606 |
23.58 |
| 2026-06-08 12:00 |
09:07:15.44 |
+44:17:57.5 |
HIP 44913 |
23.93 |
| 2026-06-09 00:00 |
09:07:17.46 |
+44:17:34.6 |
HIP 44913 |
23.41 |
| 2026-06-09 12:00 |
09:07:19.51 |
+44:17:11.7 |
HIP 44913 |
22.89 |
| 2026-06-10 00:00 |
09:07:21.59 |
+44:16:48.8 |
HIP 44913 |
22.36 |
| 2026-06-10 12:00 |
09:07:23.69 |
+44:16:25.9 |
HIP 44913 |
21.83 |
| 2026-06-11 00:00 |
09:07:25.82 |
+44:16:03.1 |
HIP 44913 |
21.30 |
| 2026-06-11 12:00 |
09:07:27.97 |
+44:15:40.3 |
HIP 44913 |
20.76 |
| 2026-06-12 00:00 |
09:07:30.15 |
+44:15:17.5 |
HIP 44913 |
20.22 |
| 2026-06-12 12:00 |
09:07:32.36 |
+44:14:54.7 |
HIP 44913 |
19.68 |
| 2026-06-13 00:00 |
09:07:34.59 |
+44:14:32.0 |
HIP 44913 |
19.13 |
| 2026-06-13 12:00 |
09:07:36.84 |
+44:14:09.3 |
HIP 44913 |
18.58 |
| 2026-06-14 00:00 |
09:07:39.12 |
+44:13:46.7 |
HIP 44913 |
18.03 |
| 2026-06-14 12:00 |
09:07:41.43 |
+44:13:24.1 |
HIP 44913 |
17.47 |
| 2026-06-15 00:00 |
09:07:43.76 |
+44:13:01.5 |
HIP 44913 |
16.92 |
| 2026-06-15 12:00 |
09:07:46.11 |
+44:12:38.9 |
HIP 44913 |
16.35 |
| 2026-06-16 00:00 |
09:07:48.49 |
+44:12:16.5 |
HIP 44913 |
15.79 |
| 2026-06-16 12:00 |
09:07:50.89 |
+44:11:54.0 |
HIP 44913 |
15.22 |
| 2026-06-17 00:00 |
09:07:53.32 |
+44:11:31.6 |
HIP 44913 |
14.65 |
| 2026-06-17 12:00 |
09:07:55.77 |
+44:11:09.2 |
HIP 44913 |
14.08 |
| 2026-06-18 00:00 |
09:07:58.24 |
+44:10:46.9 |
HIP 44913 |
13.50 |
| 2026-06-18 12:00 |
09:08:00.74 |
+44:10:24.6 |
HIP 44913 |
12.93 |
| 2026-06-19 00:00 |
09:08:03.26 |
+44:10:02.4 |
HIP 44913 |
12.34 |
| 2026-06-19 12:00 |
09:08:05.80 |
+44:09:40.3 |
HIP 44913 |
11.76 |
| 2026-06-20 00:00 |
09:08:08.36 |
+44:09:18.2 |
HIP 44913 |
11.17 |
| 2026-06-20 12:00 |
09:08:10.95 |
+44:08:56.1 |
HIP 44913 |
10.58 |
| 2026-06-21 00:00 |
09:08:13.56 |
+44:08:34.1 |
HIP 44913 |
9.99 |
| 2026-06-21 12:00 |
09:08:16.19 |
+44:08:12.2 |
HIP 44913 |
9.40 |
| 2026-06-22 00:00 |
09:08:18.84 |
+44:07:50.3 |
HIP 44913 |
8.80 |