메타데이터
| 항목 |
값 |
| Designation |
292P/Li |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-02-06T08:53:58.968960Z |
| Orbit solution date (soln_date, UTC) |
2022-05-19T21:14:15Z |
| Obs used |
498 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
13.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-05-04.0000000 |
| e |
0.58678712 |
| q (au) |
2.535007 |
| a (au) |
6.134869 |
| i (deg) |
24.316162 |
| Ω (om, deg) |
91.860435 |
| ω (w, deg) |
318.847932 |
| M (ma, deg) |
247.179418 |
밝기
산란 + 전체 선형
$$
M_a = (8.075 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.075 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2013-05-09 |
2014-02-01 |
+14.5124 |
-5.970 |
| 2014-02-06 |
2018-04-23 |
-1.1227 |
+0.220 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
18:49:45.26 |
-25:58:19.4 |
HIP 92314 |
12.38 |
| 2026-06-01 12:00 |
18:49:33.00 |
-25:59:19.7 |
HIP 92314 |
9.45 |
| 2026-06-02 00:00 |
18:49:20.62 |
-26:00:20.0 |
HIP 92314 |
6.49 |
| 2026-06-02 12:00 |
18:49:08.11 |
-26:01:20.4 |
HIP 92314 |
3.51 |
| 2026-06-03 00:00 |
18:48:55.48 |
-26:02:20.8 |
HIP 92314 |
0.59 |
| 2026-06-03 12:00 |
18:48:42.73 |
-26:03:21.3 |
HIP 92314 |
2.57 |
| 2026-06-04 00:00 |
18:48:29.86 |
-26:04:21.8 |
HIP 92314 |
5.62 |
| 2026-06-04 12:00 |
18:48:16.87 |
-26:05:22.3 |
HIP 92314 |
8.70 |
| 2026-06-05 00:00 |
18:48:03.76 |
-26:06:22.9 |
HIP 92314 |
11.81 |
| 2026-06-05 12:00 |
18:47:50.54 |
-26:07:23.4 |
HIP 92176 |
10.51 |
| 2026-06-06 00:00 |
18:47:37.20 |
-26:08:24.0 |
HIP 92176 |
7.47 |
| 2026-06-06 12:00 |
18:47:23.75 |
-26:09:24.6 |
HIP 92176 |
4.57 |
| 2026-06-07 00:00 |
18:47:10.19 |
-26:10:25.2 |
HIP 92176 |
2.51 |
| 2026-06-07 12:00 |
18:46:56.51 |
-26:11:25.7 |
HIP 92176 |
3.52 |
| 2026-06-08 00:00 |
18:46:42.73 |
-26:12:26.3 |
HIP 92166 |
5.73 |
| 2026-06-08 12:00 |
18:46:28.84 |
-26:13:26.8 |
HIP 92166 |
8.37 |
| 2026-06-09 00:00 |
18:46:14.84 |
-26:14:27.3 |
HIP 92166 |
11.37 |
| 2026-06-09 12:00 |
18:46:00.74 |
-26:15:27.8 |
HIP 92166 |
14.52 |
| 2026-06-10 00:00 |
18:45:46.54 |
-26:16:28.2 |
HIP 92166 |
17.76 |
| 2026-06-10 12:00 |
18:45:32.23 |
-26:17:28.6 |
HIP 92166 |
21.05 |
| 2026-06-11 00:00 |
18:45:17.83 |
-26:18:28.9 |
HIP 92166 |
24.38 |
| 2026-06-11 12:00 |
18:45:03.33 |
-26:19:29.2 |
HIP 92166 |
27.74 |
| 2026-06-12 00:00 |
18:44:48.73 |
-26:20:29.5 |
HIP 92166 |
31.13 |
| 2026-06-12 12:00 |
18:44:34.04 |
-26:21:29.6 |
HIP 91750 |
30.50 |
| 2026-06-13 00:00 |
18:44:19.26 |
-26:22:29.7 |
HIP 91750 |
27.13 |
| 2026-06-13 12:00 |
18:44:04.39 |
-26:23:29.7 |
HIP 91750 |
23.76 |
| 2026-06-14 00:00 |
18:43:49.43 |
-26:24:29.6 |
HIP 91750 |
20.42 |
| 2026-06-14 12:00 |
18:43:34.38 |
-26:25:29.4 |
HIP 91750 |
17.13 |
| 2026-06-15 00:00 |
18:43:19.25 |
-26:26:29.2 |
HIP 91750 |
13.94 |
| 2026-06-15 12:00 |
18:43:04.04 |
-26:27:28.8 |
HIP 91750 |
10.94 |
| 2026-06-16 00:00 |
18:42:48.75 |
-26:28:28.3 |
HIP 91750 |
8.38 |
| 2026-06-16 12:00 |
18:42:33.38 |
-26:29:27.7 |
HIP 91750 |
6.80 |
| 2026-06-17 00:00 |
18:42:17.94 |
-26:30:27.0 |
HIP 91750 |
6.92 |
| 2026-06-17 12:00 |
18:42:02.42 |
-26:31:26.1 |
HIP 91750 |
8.69 |
| 2026-06-18 00:00 |
18:41:46.83 |
-26:32:25.1 |
HIP 91750 |
11.38 |
| 2026-06-18 12:00 |
18:41:31.18 |
-26:33:24.0 |
HIP 91621 |
12.35 |
| 2026-06-19 00:00 |
18:41:15.45 |
-26:34:22.7 |
HIP 91621 |
10.26 |
| 2026-06-19 12:00 |
18:40:59.66 |
-26:35:21.3 |
HIP 91621 |
9.21 |
| 2026-06-20 00:00 |
18:40:43.81 |
-26:36:19.7 |
HIP 91621 |
9.55 |
| 2026-06-20 12:00 |
18:40:27.90 |
-26:37:18.0 |
HIP 91621 |
11.17 |
| 2026-06-21 00:00 |
18:40:11.93 |
-26:38:16.1 |
HIP 91621 |
13.64 |
| 2026-06-21 12:00 |
18:39:55.91 |
-26:39:14.0 |
HIP 91621 |
16.58 |
| 2026-06-22 00:00 |
18:39:39.83 |
-26:40:11.7 |
HIP 91621 |
19.79 |