메타데이터
| 항목 |
값 |
| Designation |
C/2015 VL62 (Lemmon-Yeung-PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-08-28T14:12:57.562560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:17Z |
| Obs used |
2115 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
5.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-03-17.0000000 |
| e |
1.00203088 |
| q (au) |
2.720271 |
| a (au) |
-1339.452215 |
| i (deg) |
165.614083 |
| Ω (om, deg) |
94.546143 |
| ω (w, deg) |
128.359439 |
| M (ma, deg) |
-0.003309 |
밝기
산란 + 전체 선형
$$
M_a = (9.551 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.551 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.822 |
| k |
0.999 |
| 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 |
11:57:27.82 |
-14:50:44.8 |
HIP 58424 |
19.17 |
| 2026-07-29 12:00 |
11:57:30.31 |
-14:50:43.5 |
HIP 58424 |
18.57 |
| 2026-07-30 00:00 |
11:57:32.83 |
-14:50:42.5 |
HIP 58424 |
17.96 |
| 2026-07-30 12:00 |
11:57:35.39 |
-14:50:41.8 |
HIP 58424 |
17.35 |
| 2026-07-31 00:00 |
11:57:37.97 |
-14:50:41.5 |
HIP 58424 |
16.73 |
| 2026-07-31 12:00 |
11:57:40.59 |
-14:50:41.4 |
HIP 58424 |
16.10 |
| 2026-08-01 00:00 |
11:57:43.24 |
-14:50:41.6 |
HIP 58424 |
15.46 |
| 2026-08-01 12:00 |
11:57:45.91 |
-14:50:42.1 |
HIP 58424 |
14.81 |
| 2026-08-02 00:00 |
11:57:48.62 |
-14:50:43.0 |
HIP 58424 |
14.16 |
| 2026-08-02 12:00 |
11:57:51.36 |
-14:50:44.1 |
HIP 58424 |
13.50 |
| 2026-08-03 00:00 |
11:57:54.12 |
-14:50:45.6 |
HIP 58424 |
12.83 |
| 2026-08-03 12:00 |
11:57:56.92 |
-14:50:47.3 |
HIP 58424 |
12.16 |
| 2026-08-04 00:00 |
11:57:59.75 |
-14:50:49.3 |
HIP 58424 |
11.47 |
| 2026-08-04 12:00 |
11:58:02.60 |
-14:50:51.7 |
HIP 58424 |
10.78 |
| 2026-08-05 00:00 |
11:58:05.48 |
-14:50:54.3 |
HIP 58424 |
10.08 |
| 2026-08-05 12:00 |
11:58:08.39 |
-14:50:57.3 |
HIP 58424 |
9.38 |
| 2026-08-06 00:00 |
11:58:11.33 |
-14:51:00.5 |
HIP 58424 |
8.67 |
| 2026-08-06 12:00 |
11:58:14.30 |
-14:51:04.0 |
HIP 58424 |
7.95 |
| 2026-08-07 00:00 |
11:58:17.29 |
-14:51:07.8 |
HIP 58424 |
7.22 |
| 2026-08-07 12:00 |
11:58:20.32 |
-14:51:12.0 |
HIP 58424 |
6.49 |
| 2026-08-08 00:00 |
11:58:23.37 |
-14:51:16.4 |
HIP 58424 |
5.75 |
| 2026-08-08 12:00 |
11:58:26.44 |
-14:51:21.1 |
HIP 58424 |
5.00 |
| 2026-08-09 00:00 |
11:58:29.55 |
-14:51:26.1 |
HIP 58424 |
4.25 |
| 2026-08-09 12:00 |
11:58:32.68 |
-14:51:31.4 |
HIP 58424 |
3.48 |
| 2026-08-10 00:00 |
11:58:35.84 |
-14:51:37.0 |
HIP 58424 |
2.72 |
| 2026-08-10 12:00 |
11:58:39.02 |
-14:51:42.9 |
HIP 58424 |
1.94 |
| 2026-08-11 00:00 |
11:58:42.23 |
-14:51:49.1 |
HIP 58424 |
1.16 |
| 2026-08-11 12:00 |
11:58:45.46 |
-14:51:55.5 |
HIP 58424 |
0.37 |
| 2026-08-12 00:00 |
11:58:48.72 |
-14:52:02.3 |
HIP 58424 |
0.43 |
| 2026-08-12 12:00 |
11:58:52.01 |
-14:52:09.4 |
HIP 58424 |
1.23 |
| 2026-08-13 00:00 |
11:58:55.32 |
-14:52:16.7 |
HIP 58424 |
2.04 |
| 2026-08-13 12:00 |
11:58:58.65 |
-14:52:24.3 |
HIP 58424 |
2.85 |
| 2026-08-14 00:00 |
11:59:02.01 |
-14:52:32.2 |
HIP 58424 |
3.68 |
| 2026-08-14 12:00 |
11:59:05.39 |
-14:52:40.4 |
HIP 58424 |
4.51 |
| 2026-08-15 00:00 |
11:59:08.80 |
-14:52:48.9 |
HIP 58424 |
5.34 |
| 2026-08-15 12:00 |
11:59:12.23 |
-14:52:57.6 |
HIP 58424 |
6.18 |
| 2026-08-16 00:00 |
11:59:15.68 |
-14:53:06.7 |
HIP 58424 |
7.03 |
| 2026-08-16 12:00 |
11:59:19.15 |
-14:53:16.0 |
HIP 58424 |
7.88 |
| 2026-08-17 00:00 |
11:59:22.65 |
-14:53:25.6 |
HIP 58424 |
8.74 |
| 2026-08-17 12:00 |
11:59:26.17 |
-14:53:35.4 |
HIP 58424 |
9.61 |
| 2026-08-18 00:00 |
11:59:29.71 |
-14:53:45.6 |
HIP 58424 |
10.48 |
| 2026-08-18 12:00 |
11:59:33.27 |
-14:53:56.0 |
HIP 58424 |
11.36 |
| 2026-08-19 00:00 |
11:59:36.85 |
-14:54:06.7 |
HIP 58424 |
12.24 |