메타데이터
| 항목 |
값 |
| Designation |
413P/Larson |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-07-19T07:08:45.504960Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:49Z |
| Obs used |
818 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
9.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-11-25T04:11:40.128000Z |
| Discovery magnitude (MPC) |
20.50 T |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-01-12.0000000 |
| e |
0.42384746 |
| q (au) |
2.139804 |
| a (au) |
3.713954 |
| i (deg) |
15.984004 |
| Ω (om, deg) |
39.063272 |
| ω (w, deg) |
185.901501 |
| M (ma, deg) |
183.145966 |
밝기
산란 + 전체 선형
$$
M_a = (15.069 + 3.557\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.069 |
| n |
3.557 |
| gf |
1.000 |
| gb |
-0.559 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
05:47:25.60 |
+32:28:51.3 |
HIP 27394 |
17.60 |
| 2026-07-29 12:00 |
05:47:55.21 |
+32:29:53.0 |
HIP 27394 |
14.63 |
| 2026-07-30 00:00 |
05:48:24.76 |
+32:30:54.7 |
HIP 27394 |
14.08 |
| 2026-07-30 12:00 |
05:48:54.26 |
+32:31:56.4 |
HIP 27394 |
16.17 |
| 2026-07-31 00:00 |
05:49:23.70 |
+32:32:58.2 |
HIP 27394 |
20.09 |
| 2026-07-31 12:00 |
05:49:53.08 |
+32:33:59.9 |
HIP 27584 |
22.63 |
| 2026-08-01 00:00 |
05:50:22.40 |
+32:35:01.6 |
HIP 27584 |
22.40 |
| 2026-08-01 12:00 |
05:50:51.66 |
+32:36:03.4 |
HIP 27584 |
23.87 |
| 2026-08-02 00:00 |
05:51:20.86 |
+32:37:05.1 |
HIP 27784 |
18.29 |
| 2026-08-02 12:00 |
05:51:49.99 |
+32:38:06.9 |
HIP 27784 |
12.56 |
| 2026-08-03 00:00 |
05:52:19.07 |
+32:39:08.7 |
HIP 27784 |
7.66 |
| 2026-08-03 12:00 |
05:52:48.08 |
+32:40:10.6 |
HIP 27784 |
6.06 |
| 2026-08-04 00:00 |
05:53:17.02 |
+32:41:12.5 |
HIP 27784 |
9.56 |
| 2026-08-04 12:00 |
05:53:45.91 |
+32:42:14.4 |
HIP 27784 |
14.90 |
| 2026-08-05 00:00 |
05:54:14.72 |
+32:43:16.3 |
HIP 27784 |
20.69 |
| 2026-08-05 12:00 |
05:54:43.47 |
+32:44:18.3 |
HIP 27784 |
26.63 |
| 2026-08-06 00:00 |
05:55:12.14 |
+32:45:20.4 |
HIP 28102 |
31.60 |
| 2026-08-06 12:00 |
05:55:40.75 |
+32:46:22.5 |
HIP 28102 |
28.25 |
| 2026-08-07 00:00 |
05:56:09.29 |
+32:47:24.6 |
HIP 28102 |
25.91 |
| 2026-08-07 12:00 |
05:56:37.76 |
+32:48:26.8 |
HIP 28102 |
24.87 |
| 2026-08-08 00:00 |
05:57:06.15 |
+32:49:29.1 |
HIP 28102 |
25.28 |
| 2026-08-08 12:00 |
05:57:34.47 |
+32:50:31.4 |
HIP 28361 |
24.82 |
| 2026-08-09 00:00 |
05:58:02.72 |
+32:51:33.8 |
HIP 28361 |
18.81 |
| 2026-08-09 12:00 |
05:58:30.89 |
+32:52:36.3 |
HIP 28361 |
12.84 |
| 2026-08-10 00:00 |
05:58:58.98 |
+32:53:38.8 |
HIP 28361 |
6.94 |
| 2026-08-10 12:00 |
05:59:26.99 |
+32:54:41.4 |
HIP 28361 |
1.81 |
| 2026-08-11 00:00 |
05:59:54.93 |
+32:55:44.2 |
HIP 28361 |
5.44 |
| 2026-08-11 12:00 |
06:00:22.78 |
+32:56:47.0 |
HIP 28361 |
11.24 |
| 2026-08-12 00:00 |
06:00:50.55 |
+32:57:49.9 |
HIP 28429 |
12.85 |
| 2026-08-12 12:00 |
06:01:18.24 |
+32:58:52.8 |
HIP 28429 |
16.31 |
| 2026-08-13 00:00 |
06:01:45.84 |
+32:59:55.9 |
HIP 28429 |
20.87 |
| 2026-08-13 12:00 |
06:02:13.36 |
+33:00:59.1 |
HIP 28644 |
24.44 |
| 2026-08-14 00:00 |
06:02:40.80 |
+33:02:02.4 |
HIP 28644 |
24.06 |
| 2026-08-14 12:00 |
06:03:08.14 |
+33:03:05.8 |
HIP 28644 |
25.07 |
| 2026-08-15 00:00 |
06:03:35.40 |
+33:04:09.4 |
HIP 28644 |
27.33 |
| 2026-08-15 12:00 |
06:04:02.57 |
+33:05:13.0 |
HIP 28644 |
30.53 |
| 2026-08-16 00:00 |
06:04:29.64 |
+33:06:16.8 |
HIP 28861 |
32.56 |
| 2026-08-16 12:00 |
06:04:56.63 |
+33:07:20.7 |
HIP 28994 |
27.22 |
| 2026-08-17 00:00 |
06:05:23.52 |
+33:08:24.7 |
HIP 28994 |
21.88 |
| 2026-08-17 12:00 |
06:05:50.32 |
+33:09:28.9 |
HIP 28994 |
16.82 |
| 2026-08-18 00:00 |
06:06:17.02 |
+33:10:33.2 |
HIP 28994 |
12.38 |
| 2026-08-18 12:00 |
06:06:43.63 |
+33:11:37.6 |
HIP 28994 |
9.41 |
| 2026-08-19 00:00 |
06:07:10.14 |
+33:12:42.2 |
HIP 28994 |
9.40 |