308P/Lagerkvist-Carsenty
메타데이터
| 항목 |
값 |
| Designation |
308P/Lagerkvist-Carsenty |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-05-13T16:53:46.351680Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T19:55:49Z |
| Obs used |
369 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2014-08-16T04:49:51.110400Z |
| Discovery magnitude (MPC) |
20.70 i |
| Discovery observatory (MPC) |
W84 · Cerro Tololo-DECam |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-05-13.0000000 |
| e |
0.36222272 |
| q (au) |
4.256979 |
| a (au) |
6.674710 |
| i (deg) |
4.840175 |
| Ω (om, deg) |
63.143956 |
| ω (w, deg) |
333.650183 |
| M (ma, deg) |
192.952390 |
밝기
산란 + 전체 선형
$$
M_a = (9.986 + 3.995\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.986 |
| n |
3.995 |
| gf |
1.000 |
| gb |
-0.962 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
16:23:07.46 |
-21:26:47.2 |
HIP 80276 |
9.83 |
| 2026-02-03 12:00 |
16:23:17.22 |
-21:27:14.2 |
HIP 80276 |
10.33 |
| 2026-02-04 00:00 |
16:23:26.88 |
-21:27:40.8 |
HIP 80276 |
11.28 |
| 2026-02-04 12:00 |
16:23:36.45 |
-21:28:07.2 |
HIP 80276 |
12.57 |
| 2026-02-05 00:00 |
16:23:45.92 |
-21:28:33.4 |
HIP 80276 |
14.09 |
| 2026-02-05 12:00 |
16:23:55.29 |
-21:28:59.3 |
HIP 80276 |
15.77 |
| 2026-02-06 00:00 |
16:24:04.57 |
-21:29:25.0 |
HIP 80276 |
17.55 |
| 2026-02-06 12:00 |
16:24:13.75 |
-21:29:50.4 |
HIP 80276 |
19.40 |
| 2026-02-07 00:00 |
16:24:22.83 |
-21:30:15.6 |
HIP 80458 |
18.03 |
| 2026-02-07 12:00 |
16:24:31.81 |
-21:30:40.5 |
HIP 80458 |
16.15 |
| 2026-02-08 00:00 |
16:24:40.69 |
-21:31:05.1 |
HIP 80458 |
14.37 |
| 2026-02-08 12:00 |
16:24:49.48 |
-21:31:29.5 |
HIP 80458 |
12.70 |
| 2026-02-09 00:00 |
16:24:58.16 |
-21:31:53.7 |
HIP 80458 |
11.18 |
| 2026-02-09 12:00 |
16:25:06.74 |
-21:32:17.6 |
HIP 80458 |
9.88 |
| 2026-02-10 00:00 |
16:25:15.21 |
-21:32:41.2 |
HIP 80458 |
8.87 |
| 2026-02-10 12:00 |
16:25:23.59 |
-21:33:04.6 |
HIP 80458 |
8.23 |
| 2026-02-11 00:00 |
16:25:31.86 |
-21:33:27.8 |
HIP 80458 |
8.05 |
| 2026-02-11 12:00 |
16:25:40.02 |
-21:33:50.7 |
HIP 80458 |
8.33 |
| 2026-02-12 00:00 |
16:25:48.08 |
-21:34:13.3 |
HIP 80458 |
9.01 |
| 2026-02-12 12:00 |
16:25:56.04 |
-21:34:35.7 |
HIP 80458 |
10.01 |
| 2026-02-13 00:00 |
16:26:03.89 |
-21:34:57.8 |
HIP 80458 |
11.21 |
| 2026-02-13 12:00 |
16:26:11.63 |
-21:35:19.6 |
HIP 80458 |
12.56 |
| 2026-02-14 00:00 |
16:26:19.27 |
-21:35:41.3 |
HIP 80534 |
12.23 |
| 2026-02-14 12:00 |
16:26:26.79 |
-21:36:02.6 |
HIP 80534 |
11.65 |
| 2026-02-15 00:00 |
16:26:34.21 |
-21:36:23.7 |
HIP 80534 |
11.32 |
| 2026-02-15 12:00 |
16:26:41.52 |
-21:36:44.5 |
HIP 80534 |
11.27 |
| 2026-02-16 00:00 |
16:26:48.72 |
-21:37:05.1 |
HIP 80534 |
11.47 |
| 2026-02-16 12:00 |
16:26:55.81 |
-21:37:25.5 |
HIP 80534 |
11.91 |
| 2026-02-17 00:00 |
16:27:02.79 |
-21:37:45.5 |
HIP 80534 |
12.54 |
| 2026-02-17 12:00 |
16:27:09.66 |
-21:38:05.3 |
HIP 80534 |
13.34 |
| 2026-02-18 00:00 |
16:27:16.42 |
-21:38:24.9 |
HIP 80534 |
14.26 |
| 2026-02-18 12:00 |
16:27:23.06 |
-21:38:44.2 |
HIP 80534 |
15.27 |
| 2026-02-19 00:00 |
16:27:29.59 |
-21:39:03.2 |
HIP 80534 |
16.36 |
| 2026-02-19 12:00 |
16:27:36.01 |
-21:39:22.0 |
HIP 80534 |
17.49 |
| 2026-02-20 00:00 |
16:27:42.31 |
-21:39:40.5 |
HIP 80534 |
18.66 |
| 2026-02-20 12:00 |
16:27:48.50 |
-21:39:58.8 |
HIP 80534 |
19.85 |
| 2026-02-21 00:00 |
16:27:54.57 |
-21:40:16.8 |
HIP 80756 |
20.71 |
| 2026-02-21 12:00 |
16:28:00.53 |
-21:40:34.6 |
HIP 80756 |
19.49 |
| 2026-02-22 00:00 |
16:28:06.37 |
-21:40:52.1 |
HIP 80756 |
18.32 |
| 2026-02-22 12:00 |
16:28:12.10 |
-21:41:09.3 |
HIP 80756 |
17.20 |
| 2026-02-23 00:00 |
16:28:17.71 |
-21:41:26.3 |
HIP 80756 |
16.14 |
| 2026-02-23 12:00 |
16:28:23.20 |
-21:41:43.0 |
HIP 80756 |
15.15 |
| 2026-02-24 00:00 |
16:28:28.58 |
-21:41:59.5 |
HIP 80756 |
14.24 |