메타데이터
| 항목 |
값 |
| Designation |
250P/Larson |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-02-01T20:31:02.945280Z |
| Orbit solution date (soln_date, UTC) |
2026-05-28T12:12:25Z |
| Obs used |
571 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
10.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-08-24.0000000 |
| e |
0.40736973 |
| q (au) |
2.212476 |
| a (au) |
3.733316 |
| i (deg) |
13.289115 |
| Ω (om, deg) |
73.709887 |
| ω (w, deg) |
45.028545 |
| M (ma, deg) |
238.004787 |
밝기
산란 + 전체 선형
$$
M_a = (17.845 + 3.530\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.845 |
| n |
3.530 |
| gf |
0.982 |
| gb |
-0.684 |
| k |
0.800 |
| δ90 |
4.965 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
13:42:41.59 |
+00:29:45.2 |
HIP 67050 |
29.13 |
| 2026-06-01 12:00 |
13:42:33.01 |
+00:27:57.7 |
HIP 67050 |
31.84 |
| 2026-06-02 00:00 |
13:42:24.71 |
+00:26:08.7 |
HIP 66875 |
33.69 |
| 2026-06-02 12:00 |
13:42:16.69 |
+00:24:18.2 |
HIP 66840 |
32.41 |
| 2026-06-03 00:00 |
13:42:08.95 |
+00:22:26.2 |
HIP 66840 |
30.30 |
| 2026-06-03 12:00 |
13:42:01.50 |
+00:20:32.6 |
HIP 66840 |
28.27 |
| 2026-06-04 00:00 |
13:41:54.33 |
+00:18:37.6 |
HIP 66840 |
26.31 |
| 2026-06-04 12:00 |
13:41:47.44 |
+00:16:41.1 |
HIP 66840 |
24.46 |
| 2026-06-05 00:00 |
13:41:40.83 |
+00:14:43.1 |
HIP 66840 |
22.71 |
| 2026-06-05 12:00 |
13:41:34.51 |
+00:12:43.6 |
HIP 66840 |
21.09 |
| 2026-06-06 00:00 |
13:41:28.46 |
+00:10:42.7 |
HIP 66840 |
19.62 |
| 2026-06-06 12:00 |
13:41:22.71 |
+00:08:40.4 |
HIP 66840 |
18.33 |
| 2026-06-07 00:00 |
13:41:17.23 |
+00:06:36.6 |
HIP 66840 |
17.24 |
| 2026-06-07 12:00 |
13:41:12.03 |
+00:04:31.4 |
HIP 66840 |
16.39 |
| 2026-06-08 00:00 |
13:41:07.12 |
+00:02:24.9 |
HIP 66840 |
15.81 |
| 2026-06-08 12:00 |
13:41:02.49 |
+00:00:16.9 |
HIP 66673 |
15.19 |
| 2026-06-09 00:00 |
13:40:58.14 |
-00:01:52.4 |
HIP 66673 |
13.88 |
| 2026-06-09 12:00 |
13:40:54.07 |
-00:04:03.1 |
HIP 66673 |
12.98 |
| 2026-06-10 00:00 |
13:40:50.28 |
-00:06:15.2 |
HIP 66673 |
12.55 |
| 2026-06-10 12:00 |
13:40:46.77 |
-00:08:28.5 |
HIP 66673 |
12.65 |
| 2026-06-11 00:00 |
13:40:43.54 |
-00:10:43.3 |
HIP 66673 |
13.25 |
| 2026-06-11 12:00 |
13:40:40.59 |
-00:12:59.3 |
HIP 66673 |
14.29 |
| 2026-06-12 00:00 |
13:40:37.93 |
-00:15:16.6 |
HIP 66673 |
15.69 |
| 2026-06-12 12:00 |
13:40:35.54 |
-00:17:35.3 |
HIP 66673 |
17.36 |
| 2026-06-13 00:00 |
13:40:33.43 |
-00:19:55.2 |
HIP 66673 |
19.23 |
| 2026-06-13 12:00 |
13:40:31.59 |
-00:22:16.4 |
HIP 66673 |
21.24 |
| 2026-06-14 00:00 |
13:40:30.04 |
-00:24:38.8 |
HIP 66673 |
23.37 |
| 2026-06-14 12:00 |
13:40:28.76 |
-00:27:02.5 |
HIP 66673 |
25.59 |
| 2026-06-15 00:00 |
13:40:27.76 |
-00:29:27.5 |
HIP 66673 |
27.87 |
| 2026-06-15 12:00 |
13:40:27.04 |
-00:31:53.6 |
HIP 66673 |
30.22 |
| 2026-06-16 00:00 |
13:40:26.59 |
-00:34:21.0 |
HIP 66673 |
32.60 |
| 2026-06-16 12:00 |
13:40:26.42 |
-00:36:49.5 |
HIP 66673 |
35.03 |
| 2026-06-17 00:00 |
13:40:26.52 |
-00:39:19.2 |
HIP 66673 |
37.50 |
| 2026-06-17 12:00 |
13:40:26.89 |
-00:41:50.1 |
HIP 66673 |
40.00 |
| 2026-06-18 00:00 |
13:40:27.54 |
-00:44:22.2 |
HIP 66673 |
42.53 |
| 2026-06-18 12:00 |
13:40:28.45 |
-00:46:55.4 |
HIP 66840 |
44.90 |
| 2026-06-19 00:00 |
13:40:29.64 |
-00:49:29.7 |
HIP 66927 |
43.59 |
| 2026-06-19 12:00 |
13:40:31.09 |
-00:52:05.1 |
HIP 66927 |
41.96 |
| 2026-06-20 00:00 |
13:40:32.81 |
-00:54:41.6 |
HIP 66927 |
40.37 |
| 2026-06-20 12:00 |
13:40:34.80 |
-00:57:19.2 |
HIP 66927 |
38.83 |
| 2026-06-21 00:00 |
13:40:37.06 |
-00:59:57.8 |
HIP 66927 |
37.34 |
| 2026-06-21 12:00 |
13:40:39.57 |
-01:02:37.5 |
HIP 66927 |
35.93 |
| 2026-06-22 00:00 |
13:40:42.35 |
-01:05:18.3 |
HIP 66643 |
34.40 |