메타데이터
| 항목 |
값 |
| Designation |
P/2015 D6 (Lemmon-PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-07-21T02:31:34.800960Z |
| Orbit solution date (soln_date, UTC) |
2024-09-01T19:42:23Z |
| Obs used |
66 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
16.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-08-03.0000000 |
| e |
0.36774122 |
| q (au) |
4.567753 |
| a (au) |
7.224499 |
| i (deg) |
20.225177 |
| Ω (om, deg) |
46.134037 |
| ω (w, deg) |
126.551812 |
| M (ma, deg) |
0.654493 |
밝기
산란 + 전체 선형
$$
M_a = (7.288 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.288 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.789 |
| k |
1.000 |
| 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 |
01:03:27.61 |
-06:39:38.3 |
HIP 4796 |
29.34 |
| 2026-06-01 12:00 |
01:03:36.56 |
-06:39:01.3 |
HIP 4796 |
31.64 |
| 2026-06-02 00:00 |
01:03:45.44 |
-06:38:24.9 |
HIP 4796 |
33.93 |
| 2026-06-02 12:00 |
01:03:54.27 |
-06:37:49.0 |
HIP 4796 |
36.20 |
| 2026-06-03 00:00 |
01:04:03.03 |
-06:37:13.8 |
HIP 4796 |
38.46 |
| 2026-06-03 12:00 |
01:04:11.73 |
-06:36:39.1 |
HIP 4796 |
40.69 |
| 2026-06-04 00:00 |
01:04:20.37 |
-06:36:05.0 |
HIP 4796 |
42.91 |
| 2026-06-04 12:00 |
01:04:28.95 |
-06:35:31.5 |
HIP 4796 |
45.11 |
| 2026-06-05 00:00 |
01:04:37.46 |
-06:34:58.6 |
HIP 4796 |
47.30 |
| 2026-06-05 12:00 |
01:04:45.91 |
-06:34:26.3 |
HIP 4796 |
49.46 |
| 2026-06-06 00:00 |
01:04:54.29 |
-06:33:54.5 |
HIP 4948 |
50.10 |
| 2026-06-06 12:00 |
01:05:02.61 |
-06:33:23.4 |
HIP 4948 |
50.57 |
| 2026-06-07 00:00 |
01:05:10.86 |
-06:32:52.9 |
HIP 4948 |
51.11 |
| 2026-06-07 12:00 |
01:05:19.05 |
-06:32:22.9 |
HIP 5356 |
51.53 |
| 2026-06-08 00:00 |
01:05:27.17 |
-06:31:53.6 |
HIP 5356 |
49.50 |
| 2026-06-08 12:00 |
01:05:35.22 |
-06:31:24.9 |
HIP 5356 |
47.49 |
| 2026-06-09 00:00 |
01:05:43.20 |
-06:30:56.7 |
HIP 5356 |
45.50 |
| 2026-06-09 12:00 |
01:05:51.12 |
-06:30:29.2 |
HIP 5356 |
43.54 |
| 2026-06-10 00:00 |
01:05:58.97 |
-06:30:02.3 |
HIP 5356 |
41.61 |
| 2026-06-10 12:00 |
01:06:06.75 |
-06:29:36.0 |
HIP 5356 |
39.70 |
| 2026-06-11 00:00 |
01:06:14.46 |
-06:29:10.2 |
HIP 5356 |
37.82 |
| 2026-06-11 12:00 |
01:06:22.10 |
-06:28:45.1 |
HIP 5356 |
35.96 |
| 2026-06-12 00:00 |
01:06:29.67 |
-06:28:20.7 |
HIP 5356 |
34.14 |
| 2026-06-12 12:00 |
01:06:37.16 |
-06:27:56.8 |
HIP 5356 |
32.35 |
| 2026-06-13 00:00 |
01:06:44.59 |
-06:27:33.5 |
HIP 5356 |
30.60 |
| 2026-06-13 12:00 |
01:06:51.95 |
-06:27:10.9 |
HIP 5356 |
28.88 |
| 2026-06-14 00:00 |
01:06:59.23 |
-06:26:48.9 |
HIP 5356 |
27.20 |
| 2026-06-14 12:00 |
01:07:06.44 |
-06:26:27.4 |
HIP 5356 |
25.56 |
| 2026-06-15 00:00 |
01:07:13.57 |
-06:26:06.7 |
HIP 5356 |
23.98 |
| 2026-06-15 12:00 |
01:07:20.63 |
-06:25:46.5 |
HIP 5356 |
22.44 |
| 2026-06-16 00:00 |
01:07:27.62 |
-06:25:26.9 |
HIP 5356 |
20.97 |
| 2026-06-16 12:00 |
01:07:34.53 |
-06:25:08.0 |
HIP 5356 |
19.57 |
| 2026-06-17 00:00 |
01:07:41.36 |
-06:24:49.7 |
HIP 5356 |
18.24 |
| 2026-06-17 12:00 |
01:07:48.12 |
-06:24:32.0 |
HIP 5356 |
17.01 |
| 2026-06-18 00:00 |
01:07:54.80 |
-06:24:14.9 |
HIP 5356 |
15.88 |
| 2026-06-18 12:00 |
01:08:01.41 |
-06:23:58.5 |
HIP 5356 |
14.88 |
| 2026-06-19 00:00 |
01:08:07.94 |
-06:23:42.7 |
HIP 5356 |
14.01 |
| 2026-06-19 12:00 |
01:08:14.39 |
-06:23:27.5 |
HIP 5356 |
13.32 |
| 2026-06-20 00:00 |
01:08:20.77 |
-06:23:12.9 |
HIP 5356 |
12.80 |
| 2026-06-20 12:00 |
01:08:27.06 |
-06:22:58.9 |
HIP 5356 |
12.48 |
| 2026-06-21 00:00 |
01:08:33.28 |
-06:22:45.6 |
HIP 5356 |
12.36 |
| 2026-06-21 12:00 |
01:08:39.42 |
-06:22:32.8 |
HIP 5356 |
12.44 |
| 2026-06-22 00:00 |
01:08:45.47 |
-06:22:20.7 |
HIP 5356 |
12.72 |