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 |
-1.000 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-05-12 00:00 |
00:56:44.86 |
-07:11:57.8 |
HIP 4346 |
17.84 |
| 2026-05-12 12:00 |
00:56:55.87 |
-07:10:58.8 |
HIP 4346 |
20.71 |
| 2026-05-13 00:00 |
00:57:06.84 |
-07:10:00.3 |
HIP 4346 |
23.57 |
| 2026-05-13 12:00 |
00:57:17.77 |
-07:09:02.3 |
HIP 4346 |
26.42 |
| 2026-05-14 00:00 |
00:57:28.65 |
-07:08:04.9 |
HIP 4403 |
29.02 |
| 2026-05-14 12:00 |
00:57:39.49 |
-07:07:08.0 |
HIP 4403 |
29.73 |
| 2026-05-15 00:00 |
00:57:50.29 |
-07:06:11.6 |
HIP 4403 |
30.69 |
| 2026-05-15 12:00 |
00:58:01.04 |
-07:05:15.7 |
HIP 4403 |
31.88 |
| 2026-05-16 00:00 |
00:58:11.75 |
-07:04:20.3 |
HIP 4403 |
33.26 |
| 2026-05-16 12:00 |
00:58:22.41 |
-07:03:25.5 |
HIP 4403 |
34.81 |
| 2026-05-17 00:00 |
00:58:33.03 |
-07:02:31.2 |
HIP 4403 |
36.51 |
| 2026-05-17 12:00 |
00:58:43.60 |
-07:01:37.5 |
HIP 4403 |
38.32 |
| 2026-05-18 00:00 |
00:58:54.12 |
-07:00:44.2 |
HIP 4403 |
40.24 |
| 2026-05-18 12:00 |
00:59:04.60 |
-06:59:51.6 |
HIP 4796 |
39.01 |
| 2026-05-19 00:00 |
00:59:15.02 |
-06:58:59.4 |
HIP 4796 |
36.28 |
| 2026-05-19 12:00 |
00:59:25.40 |
-06:58:07.8 |
HIP 4796 |
33.57 |
| 2026-05-20 00:00 |
00:59:35.73 |
-06:57:16.8 |
HIP 4796 |
30.87 |
| 2026-05-20 12:00 |
00:59:46.01 |
-06:56:26.3 |
HIP 4796 |
28.18 |
| 2026-05-21 00:00 |
00:59:56.23 |
-06:55:36.3 |
HIP 4796 |
25.51 |
| 2026-05-21 12:00 |
01:00:06.41 |
-06:54:46.9 |
HIP 4796 |
22.86 |
| 2026-05-22 00:00 |
01:00:16.54 |
-06:53:58.0 |
HIP 4796 |
20.21 |
| 2026-05-22 12:00 |
01:00:26.61 |
-06:53:09.7 |
HIP 4796 |
17.59 |
| 2026-05-23 00:00 |
01:00:36.63 |
-06:52:21.9 |
HIP 4796 |
14.98 |
| 2026-05-23 12:00 |
01:00:46.60 |
-06:51:34.7 |
HIP 4796 |
12.38 |
| 2026-05-24 00:00 |
01:00:56.52 |
-06:50:48.1 |
HIP 4796 |
9.80 |
| 2026-05-24 12:00 |
01:01:06.38 |
-06:50:02.0 |
HIP 4796 |
7.23 |
| 2026-05-25 00:00 |
01:01:16.19 |
-06:49:16.4 |
HIP 4796 |
4.68 |
| 2026-05-25 12:00 |
01:01:25.94 |
-06:48:31.5 |
HIP 4796 |
2.15 |
| 2026-05-26 00:00 |
01:01:35.64 |
-06:47:47.1 |
HIP 4796 |
0.38 |
| 2026-05-26 12:00 |
01:01:45.29 |
-06:47:03.2 |
HIP 4796 |
2.88 |
| 2026-05-27 00:00 |
01:01:54.88 |
-06:46:19.9 |
HIP 4796 |
5.36 |
| 2026-05-27 12:00 |
01:02:04.41 |
-06:45:37.2 |
HIP 4796 |
7.83 |
| 2026-05-28 00:00 |
01:02:13.89 |
-06:44:55.0 |
HIP 4796 |
10.29 |
| 2026-05-28 12:00 |
01:02:23.31 |
-06:44:13.4 |
HIP 4796 |
12.73 |
| 2026-05-29 00:00 |
01:02:32.67 |
-06:43:32.4 |
HIP 4796 |
15.15 |
| 2026-05-29 12:00 |
01:02:41.97 |
-06:42:52.0 |
HIP 4796 |
17.56 |
| 2026-05-30 00:00 |
01:02:51.22 |
-06:42:12.1 |
HIP 4796 |
19.95 |
| 2026-05-30 12:00 |
01:03:00.40 |
-06:41:32.8 |
HIP 4796 |
22.32 |
| 2026-05-31 00:00 |
01:03:09.53 |
-06:40:54.0 |
HIP 4796 |
24.68 |
| 2026-05-31 12:00 |
01:03:18.60 |
-06:40:15.9 |
HIP 4796 |
27.01 |
| 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 |