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) |
| 2026-05-12 00:00 |
16:18:35.84 |
-21:33:24.5 |
HIP 79910 |
2.29 |
| 2026-05-12 12:00 |
16:18:24.58 |
-21:33:03.2 |
HIP 79910 |
4.22 |
| 2026-05-13 00:00 |
16:18:13.28 |
-21:32:41.9 |
HIP 79910 |
6.66 |
| 2026-05-13 12:00 |
16:18:01.93 |
-21:32:20.3 |
HIP 79910 |
9.24 |
| 2026-05-14 00:00 |
16:17:50.54 |
-21:31:58.7 |
HIP 79910 |
11.86 |
| 2026-05-14 12:00 |
16:17:39.11 |
-21:31:36.8 |
HIP 79910 |
14.51 |
| 2026-05-15 00:00 |
16:17:27.64 |
-21:31:14.9 |
HIP 79785 |
14.64 |
| 2026-05-15 12:00 |
16:17:16.13 |
-21:30:52.7 |
HIP 79785 |
13.26 |
| 2026-05-16 00:00 |
16:17:04.59 |
-21:30:30.5 |
HIP 79785 |
12.34 |
| 2026-05-16 12:00 |
16:16:53.01 |
-21:30:08.1 |
HIP 79785 |
11.97 |
| 2026-05-17 00:00 |
16:16:41.40 |
-21:29:45.5 |
HIP 79785 |
12.20 |
| 2026-05-17 12:00 |
16:16:29.76 |
-21:29:22.9 |
HIP 79785 |
13.03 |
| 2026-05-18 00:00 |
16:16:18.08 |
-21:29:00.1 |
HIP 79785 |
14.33 |
| 2026-05-18 12:00 |
16:16:06.38 |
-21:28:37.2 |
HIP 79743 |
15.30 |
| 2026-05-19 00:00 |
16:15:54.66 |
-21:28:14.1 |
HIP 79743 |
16.10 |
| 2026-05-19 12:00 |
16:15:42.91 |
-21:27:51.0 |
HIP 79743 |
17.30 |
| 2026-05-20 00:00 |
16:15:31.13 |
-21:27:27.7 |
HIP 79743 |
18.84 |
| 2026-05-20 12:00 |
16:15:19.34 |
-21:27:04.3 |
HIP 79743 |
20.64 |
| 2026-05-21 00:00 |
16:15:07.52 |
-21:26:40.8 |
HIP 79524 |
20.45 |
| 2026-05-21 12:00 |
16:14:55.69 |
-21:26:17.2 |
HIP 79524 |
17.67 |
| 2026-05-22 00:00 |
16:14:43.84 |
-21:25:53.5 |
HIP 79524 |
14.88 |
| 2026-05-22 12:00 |
16:14:31.97 |
-21:25:29.8 |
HIP 79524 |
12.09 |
| 2026-05-23 00:00 |
16:14:20.09 |
-21:25:05.9 |
HIP 79524 |
9.30 |
| 2026-05-23 12:00 |
16:14:08.20 |
-21:24:41.9 |
HIP 79524 |
6.50 |
| 2026-05-24 00:00 |
16:13:56.30 |
-21:24:17.8 |
HIP 79524 |
3.71 |
| 2026-05-24 12:00 |
16:13:44.39 |
-21:23:53.7 |
HIP 79524 |
0.93 |
| 2026-05-25 00:00 |
16:13:32.47 |
-21:23:29.5 |
HIP 79524 |
1.92 |
| 2026-05-25 12:00 |
16:13:20.55 |
-21:23:05.2 |
HIP 79524 |
4.71 |
| 2026-05-26 00:00 |
16:13:08.62 |
-21:22:40.8 |
HIP 79524 |
7.52 |
| 2026-05-26 12:00 |
16:12:56.69 |
-21:22:16.4 |
HIP 79524 |
10.32 |
| 2026-05-27 00:00 |
16:12:44.76 |
-21:21:51.9 |
HIP 79524 |
13.13 |
| 2026-05-27 12:00 |
16:12:32.83 |
-21:21:27.3 |
HIP 79524 |
15.94 |
| 2026-05-28 00:00 |
16:12:20.90 |
-21:21:02.7 |
HIP 79369 |
15.89 |
| 2026-05-28 12:00 |
16:12:08.97 |
-21:20:38.0 |
HIP 79369 |
14.68 |
| 2026-05-29 00:00 |
16:11:57.05 |
-21:20:13.3 |
HIP 79300 |
13.27 |
| 2026-05-29 12:00 |
16:11:45.14 |
-21:19:48.5 |
HIP 79300 |
10.47 |
| 2026-05-30 00:00 |
16:11:33.23 |
-21:19:23.7 |
HIP 79300 |
7.67 |
| 2026-05-30 12:00 |
16:11:21.33 |
-21:18:58.8 |
HIP 79300 |
4.89 |
| 2026-05-31 00:00 |
16:11:09.44 |
-21:18:33.9 |
HIP 79300 |
2.18 |
| 2026-05-31 12:00 |
16:10:57.56 |
-21:18:09.0 |
HIP 79300 |
1.09 |
| 2026-06-01 00:00 |
16:10:45.70 |
-21:17:44.0 |
HIP 79300 |
3.65 |
| 2026-06-01 12:00 |
16:10:33.85 |
-21:17:19.0 |
HIP 79300 |
6.40 |
| 2026-06-02 00:00 |
16:10:22.01 |
-21:16:54.0 |
HIP 79300 |
9.17 |