292P/Li
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 |
-0.506 |
| 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 |
2014-11-30 |
+0.4443 |
-0.698 |
| 2014-11-30 |
2018-04-23 |
-8.4804 |
+5.076 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
18:30:37.03 |
-23:47:48.1 |
HIP 90705 |
16.27 |
| 2026-02-03 12:00 |
18:30:54.99 |
-23:48:02.4 |
HIP 90705 |
17.27 |
| 2026-02-04 00:00 |
18:31:12.90 |
-23:48:16.6 |
HIP 90705 |
19.11 |
| 2026-02-04 12:00 |
18:31:30.75 |
-23:48:30.8 |
HIP 90705 |
21.58 |
| 2026-02-05 00:00 |
18:31:48.55 |
-23:48:45.0 |
HIP 90705 |
24.47 |
| 2026-02-05 12:00 |
18:32:06.28 |
-23:48:59.2 |
HIP 90953 |
23.48 |
| 2026-02-06 00:00 |
18:32:23.96 |
-23:49:13.3 |
HIP 90953 |
20.83 |
| 2026-02-06 12:00 |
18:32:41.58 |
-23:49:27.5 |
HIP 90953 |
18.68 |
| 2026-02-07 00:00 |
18:32:59.14 |
-23:49:41.6 |
HIP 90953 |
17.23 |
| 2026-02-07 12:00 |
18:33:16.64 |
-23:49:55.7 |
HIP 91004 |
14.66 |
| 2026-02-08 00:00 |
18:33:34.08 |
-23:50:09.8 |
HIP 91004 |
12.58 |
| 2026-02-08 12:00 |
18:33:51.46 |
-23:50:23.9 |
HIP 91004 |
11.55 |
| 2026-02-09 00:00 |
18:34:08.77 |
-23:50:38.0 |
HIP 91004 |
11.83 |
| 2026-02-09 12:00 |
18:34:26.02 |
-23:50:52.1 |
HIP 91004 |
13.33 |
| 2026-02-10 00:00 |
18:34:43.20 |
-23:51:06.2 |
HIP 91004 |
15.70 |
| 2026-02-10 12:00 |
18:35:00.32 |
-23:51:20.4 |
HIP 91004 |
18.59 |
| 2026-02-11 00:00 |
18:35:17.37 |
-23:51:34.5 |
HIP 91004 |
21.79 |
| 2026-02-11 12:00 |
18:35:34.35 |
-23:51:48.6 |
HIP 91004 |
25.17 |
| 2026-02-12 00:00 |
18:35:51.27 |
-23:52:02.8 |
HIP 91066 |
27.84 |
| 2026-02-12 12:00 |
18:36:08.11 |
-23:52:16.9 |
HIP 91066 |
30.29 |
| 2026-02-13 00:00 |
18:36:24.89 |
-23:52:31.1 |
HIP 91066 |
33.00 |
| 2026-02-13 12:00 |
18:36:41.59 |
-23:52:45.3 |
HIP 91341 |
32.93 |
| 2026-02-14 00:00 |
18:36:58.23 |
-23:52:59.5 |
HIP 91405 |
31.04 |
| 2026-02-14 12:00 |
18:37:14.79 |
-23:53:13.8 |
HIP 91405 |
28.78 |
| 2026-02-15 00:00 |
18:37:31.27 |
-23:53:28.1 |
HIP 91405 |
26.88 |
| 2026-02-15 12:00 |
18:37:47.69 |
-23:53:42.4 |
HIP 91405 |
25.40 |
| 2026-02-16 00:00 |
18:38:04.03 |
-23:53:56.8 |
HIP 91405 |
24.43 |
| 2026-02-16 12:00 |
18:38:20.29 |
-23:54:11.2 |
HIP 91405 |
24.01 |
| 2026-02-17 00:00 |
18:38:36.47 |
-23:54:25.6 |
HIP 91405 |
24.17 |
| 2026-02-17 12:00 |
18:38:52.58 |
-23:54:40.1 |
HIP 91405 |
24.89 |
| 2026-02-18 00:00 |
18:39:08.61 |
-23:54:54.7 |
HIP 91405 |
26.10 |
| 2026-02-18 12:00 |
18:39:24.56 |
-23:55:09.2 |
HIP 91652 |
27.45 |
| 2026-02-19 00:00 |
18:39:40.42 |
-23:55:23.9 |
HIP 91652 |
23.83 |
| 2026-02-19 12:00 |
18:39:56.21 |
-23:55:38.6 |
HIP 91652 |
20.22 |
| 2026-02-20 00:00 |
18:40:11.92 |
-23:55:53.4 |
HIP 91652 |
16.64 |
| 2026-02-20 12:00 |
18:40:27.54 |
-23:56:08.2 |
HIP 91652 |
13.08 |
| 2026-02-21 00:00 |
18:40:43.08 |
-23:56:23.1 |
HIP 91652 |
9.56 |
| 2026-02-21 12:00 |
18:40:58.53 |
-23:56:38.0 |
HIP 91652 |
6.11 |
| 2026-02-22 00:00 |
18:41:13.90 |
-23:56:53.1 |
HIP 91652 |
2.90 |
| 2026-02-22 12:00 |
18:41:29.18 |
-23:57:08.2 |
HIP 91652 |
2.06 |
| 2026-02-23 00:00 |
18:41:44.38 |
-23:57:23.4 |
HIP 91652 |
4.94 |
| 2026-02-23 12:00 |
18:41:59.49 |
-23:57:38.6 |
HIP 91689 |
7.85 |
| 2026-02-24 00:00 |
18:42:14.51 |
-23:57:54.0 |
HIP 91689 |
9.48 |