메타데이터
| 항목 |
값 |
| Designation |
424P/La Sagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-08-16T14:00:44.933760Z |
| Orbit solution date (soln_date, UTC) |
2022-02-14T01:12:55Z |
| Obs used |
614 |
| NEO |
- |
| M1 |
17.800 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-06-06T12:36:39.744000Z |
| Discovery magnitude (MPC) |
20.60 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-05-02.0000000 |
| e |
0.69277912 |
| q (au) |
1.351983 |
| a (au) |
4.400689 |
| i (deg) |
8.637783 |
| Ω (om, deg) |
51.619990 |
| ω (w, deg) |
312.445906 |
| M (ma, deg) |
144.602315 |
밝기
산란 + 전체 선형
$$
M_a = (17.866 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.866 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.862 |
| k |
0.990 |
| δ90 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
12:16:24.84 |
+06:33:16.3 |
HIP 59916 |
15.69 |
| 2026-03-26 12:00 |
12:16:11.19 |
+06:34:36.9 |
HIP 59916 |
18.88 |
| 2026-03-27 00:00 |
12:15:57.54 |
+06:35:57.1 |
HIP 59916 |
22.21 |
| 2026-03-27 12:00 |
12:15:43.90 |
+06:37:16.9 |
HIP 59840 |
25.14 |
| 2026-03-28 00:00 |
12:15:30.27 |
+06:38:36.3 |
HIP 59840 |
27.60 |
| 2026-03-28 12:00 |
12:15:16.65 |
+06:39:55.2 |
HIP 59643 |
25.66 |
| 2026-03-29 00:00 |
12:15:03.04 |
+06:41:13.7 |
HIP 59643 |
22.18 |
| 2026-03-29 12:00 |
12:14:49.45 |
+06:42:31.8 |
HIP 59643 |
18.77 |
| 2026-03-30 00:00 |
12:14:35.86 |
+06:43:49.4 |
HIP 59643 |
15.47 |
| 2026-03-30 12:00 |
12:14:22.30 |
+06:45:06.5 |
HIP 59643 |
12.35 |
| 2026-03-31 00:00 |
12:14:08.76 |
+06:46:23.1 |
HIP 59643 |
9.58 |
| 2026-03-31 12:00 |
12:13:55.23 |
+06:47:39.2 |
HIP 59643 |
7.55 |
| 2026-04-01 00:00 |
12:13:41.73 |
+06:48:54.8 |
HIP 59643 |
6.94 |
| 2026-04-01 12:00 |
12:13:28.25 |
+06:50:10.0 |
HIP 59643 |
8.06 |
| 2026-04-02 00:00 |
12:13:14.79 |
+06:51:24.6 |
HIP 59643 |
10.35 |
| 2026-04-02 12:00 |
12:13:01.36 |
+06:52:38.7 |
HIP 59643 |
13.22 |
| 2026-04-03 00:00 |
12:12:47.96 |
+06:53:52.2 |
HIP 59643 |
16.35 |
| 2026-04-03 12:00 |
12:12:34.59 |
+06:55:05.2 |
HIP 59643 |
19.61 |
| 2026-04-04 00:00 |
12:12:21.26 |
+06:56:17.6 |
HIP 59643 |
22.95 |
| 2026-04-04 12:00 |
12:12:07.95 |
+06:57:29.5 |
HIP 59401 |
22.42 |
| 2026-04-05 00:00 |
12:11:54.68 |
+06:58:40.8 |
HIP 59401 |
21.37 |
| 2026-04-05 12:00 |
12:11:41.44 |
+06:59:51.5 |
HIP 59401 |
20.86 |
| 2026-04-06 00:00 |
12:11:28.25 |
+07:01:01.7 |
HIP 59401 |
20.92 |
| 2026-04-06 12:00 |
12:11:15.09 |
+07:02:11.2 |
HIP 59438 |
20.36 |
| 2026-04-07 00:00 |
12:11:01.97 |
+07:03:20.2 |
HIP 59438 |
20.17 |
| 2026-04-07 12:00 |
12:10:48.90 |
+07:04:28.5 |
HIP 59438 |
20.57 |
| 2026-04-08 00:00 |
12:10:35.87 |
+07:05:36.2 |
HIP 59438 |
21.51 |
| 2026-04-08 12:00 |
12:10:22.88 |
+07:06:43.3 |
HIP 59438 |
22.93 |
| 2026-04-09 00:00 |
12:10:09.94 |
+07:07:49.7 |
HIP 59438 |
24.74 |
| 2026-04-09 12:00 |
12:09:57.05 |
+07:08:55.5 |
HIP 59438 |
26.86 |
| 2026-04-10 00:00 |
12:09:44.21 |
+07:10:00.7 |
HIP 59438 |
29.20 |
| 2026-04-10 12:00 |
12:09:31.43 |
+07:11:05.1 |
HIP 59438 |
31.72 |
| 2026-04-11 00:00 |
12:09:18.69 |
+07:12:08.9 |
HIP 59438 |
34.38 |
| 2026-04-11 12:00 |
12:09:06.02 |
+07:13:12.1 |
HIP 59147 |
34.09 |
| 2026-04-12 00:00 |
12:08:53.39 |
+07:14:14.5 |
HIP 59147 |
33.15 |
| 2026-04-12 12:00 |
12:08:40.83 |
+07:15:16.3 |
HIP 59147 |
32.51 |
| 2026-04-13 00:00 |
12:08:28.33 |
+07:16:17.3 |
HIP 59057 |
30.25 |
| 2026-04-13 12:00 |
12:08:15.88 |
+07:17:17.7 |
HIP 59057 |
27.04 |
| 2026-04-14 00:00 |
12:08:03.50 |
+07:18:17.3 |
HIP 59057 |
23.87 |
| 2026-04-14 12:00 |
12:07:51.18 |
+07:19:16.2 |
HIP 59057 |
20.74 |
| 2026-04-15 00:00 |
12:07:38.93 |
+07:20:14.4 |
HIP 59057 |
17.65 |
| 2026-04-15 12:00 |
12:07:26.75 |
+07:21:11.8 |
HIP 59057 |
14.63 |
| 2026-04-16 00:00 |
12:07:14.63 |
+07:22:08.5 |
HIP 59057 |
11.70 |