메타데이터
| 항목 |
값 |
| Designation |
514P/Lemmon-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-11-23T16:24:19.644480Z |
| Orbit solution date (soln_date, UTC) |
2026-03-14T17:50:16Z |
| Obs used |
172 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
22.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-09-19T07:05:17.376000Z |
| Discovery magnitude (MPC) |
19.90 G |
| Discovery observatory (MPC) |
W62 · Comet Hunter Observatory2, New Ringgold |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-06-01.0000000 |
| e |
0.35903203 |
| q (au) |
2.918667 |
| a (au) |
4.553530 |
| i (deg) |
6.499970 |
| Ω (om, deg) |
321.641424 |
| ω (w, deg) |
89.136768 |
| M (ma, deg) |
231.008591 |
밝기
산란 + 전체 선형
$$
M_a = (13.698 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.698 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.735 |
| 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) |
| 2026-09-20 00:00 |
08:39:07.88 |
+21:09:10.2 |
HIP 42518 |
14.97 |
| 2026-09-20 12:00 |
08:39:43.56 |
+21:06:45.5 |
HIP 42518 |
6.38 |
| 2026-09-21 00:00 |
08:40:19.10 |
+21:04:21.0 |
HIP 42518 |
2.71 |
| 2026-09-21 12:00 |
08:40:54.49 |
+21:01:56.5 |
HIP 42518 |
11.06 |
| 2026-09-22 00:00 |
08:41:29.75 |
+20:59:32.1 |
HIP 42518 |
19.60 |
| 2026-09-22 12:00 |
08:42:04.86 |
+20:57:07.8 |
HIP 42766 |
13.80 |
| 2026-09-23 00:00 |
08:42:39.82 |
+20:54:43.6 |
HIP 42766 |
6.37 |
| 2026-09-23 12:00 |
08:43:14.65 |
+20:52:19.6 |
HIP 42766 |
5.95 |
| 2026-09-24 00:00 |
08:43:49.32 |
+20:49:55.6 |
HIP 42766 |
13.16 |
| 2026-09-24 12:00 |
08:44:23.86 |
+20:47:31.8 |
HIP 42974 |
19.75 |
| 2026-09-25 00:00 |
08:44:58.24 |
+20:45:08.1 |
HIP 42974 |
12.31 |
| 2026-09-25 12:00 |
08:45:32.48 |
+20:42:44.5 |
HIP 42974 |
7.34 |
| 2026-09-26 00:00 |
08:46:06.58 |
+20:40:21.1 |
HIP 43061 |
4.64 |
| 2026-09-26 12:00 |
08:46:40.52 |
+20:37:57.9 |
HIP 43061 |
4.84 |
| 2026-09-27 00:00 |
08:47:14.32 |
+20:35:34.8 |
HIP 43061 |
12.73 |
| 2026-09-27 12:00 |
08:47:47.96 |
+20:33:11.9 |
HIP 43232 |
12.04 |
| 2026-09-28 00:00 |
08:48:21.46 |
+20:30:49.1 |
HIP 43232 |
10.99 |
| 2026-09-28 12:00 |
08:48:54.80 |
+20:28:26.6 |
HIP 43254 |
8.77 |
| 2026-09-29 00:00 |
08:49:27.99 |
+20:26:04.2 |
HIP 43254 |
12.39 |
| 2026-09-29 12:00 |
08:50:01.03 |
+20:23:42.1 |
HIP 43254 |
19.01 |
| 2026-09-30 00:00 |
08:50:33.92 |
+20:21:20.2 |
HIP 43552 |
26.09 |
| 2026-09-30 12:00 |
08:51:06.65 |
+20:18:58.5 |
HIP 43552 |
18.31 |
| 2026-10-01 00:00 |
08:51:39.23 |
+20:16:37.0 |
HIP 43552 |
10.93 |
| 2026-10-01 12:00 |
08:52:11.65 |
+20:14:15.8 |
HIP 43552 |
5.64 |
| 2026-10-02 00:00 |
08:52:43.91 |
+20:11:54.8 |
HIP 43552 |
8.38 |
| 2026-10-02 12:00 |
08:53:16.02 |
+20:09:34.1 |
HIP 43701 |
11.28 |
| 2026-10-03 00:00 |
08:53:47.97 |
+20:07:13.7 |
HIP 43701 |
7.23 |
| 2026-10-03 12:00 |
08:54:19.75 |
+20:04:53.5 |
HIP 43683 |
8.94 |
| 2026-10-04 00:00 |
08:54:51.38 |
+20:02:33.6 |
HIP 43683 |
13.92 |
| 2026-10-04 12:00 |
08:55:22.84 |
+20:00:14.0 |
HIP 43905 |
20.40 |
| 2026-10-05 00:00 |
08:55:54.14 |
+19:57:54.8 |
HIP 43905 |
12.86 |
| 2026-10-05 12:00 |
08:56:25.28 |
+19:55:35.8 |
HIP 43905 |
5.82 |
| 2026-10-06 00:00 |
08:56:56.25 |
+19:53:17.2 |
HIP 43905 |
4.45 |
| 2026-10-06 12:00 |
08:57:27.05 |
+19:50:58.9 |
HIP 43905 |
11.03 |
| 2026-10-07 00:00 |
08:57:57.69 |
+19:48:41.0 |
HIP 43905 |
18.38 |
| 2026-10-07 12:00 |
08:58:28.15 |
+19:46:23.4 |
HIP 43905 |
25.81 |
| 2026-10-08 00:00 |
08:58:58.45 |
+19:44:06.2 |
HIP 44022 |
30.89 |
| 2026-10-08 12:00 |
08:59:28.58 |
+19:41:49.4 |
HIP 44022 |
33.13 |
| 2026-10-09 00:00 |
08:59:58.53 |
+19:39:33.0 |
HIP 44022 |
36.76 |
| 2026-10-09 12:00 |
09:00:28.31 |
+19:37:16.9 |
HIP 44312 |
37.67 |
| 2026-10-10 00:00 |
09:00:57.92 |
+19:35:01.3 |
HIP 44312 |
33.49 |
| 2026-10-10 12:00 |
09:01:27.35 |
+19:32:46.1 |
HIP 44312 |
30.53 |
| 2026-10-11 00:00 |
09:01:56.61 |
+19:30:31.3 |
HIP 44312 |
29.14 |