메타데이터
| 항목 |
값 |
| Designation |
513P/Broughton |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-06-16T07:21:38.180160Z |
| Orbit solution date (soln_date, UTC) |
2026-03-12T02:53:17Z |
| Obs used |
287 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
19.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2025-09-24T09:49:32.505600Z |
| Discovery magnitude (MPC) |
19.56 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-03-25.0000000 |
| e |
0.55079452 |
| q (au) |
3.276271 |
| a (au) |
7.293480 |
| i (deg) |
21.336906 |
| Ω (om, deg) |
57.023900 |
| ω (w, deg) |
304.483984 |
| M (ma, deg) |
246.147688 |
밝기
산란 + 전체 선형
$$
M_a = (13.105 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.105 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.738 |
| 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) |
| 2026-03-26 00:00 |
02:53:24.57 |
+16:03:49.7 |
HIP 13509 |
8.77 |
| 2026-03-26 12:00 |
02:53:57.56 |
+16:07:43.6 |
HIP 13509 |
6.51 |
| 2026-03-27 00:00 |
02:54:30.62 |
+16:11:37.0 |
HIP 13509 |
12.81 |
| 2026-03-27 12:00 |
02:55:03.75 |
+16:15:30.1 |
HIP 13601 |
4.46 |
| 2026-03-28 00:00 |
02:55:36.95 |
+16:19:22.7 |
HIP 13601 |
4.79 |
| 2026-03-28 12:00 |
02:56:10.21 |
+16:23:15.0 |
HIP 13601 |
13.54 |
| 2026-03-29 00:00 |
02:56:43.53 |
+16:27:06.8 |
HIP 13786 |
14.38 |
| 2026-03-29 12:00 |
02:57:16.93 |
+16:30:58.2 |
HIP 13786 |
13.63 |
| 2026-03-30 00:00 |
02:57:50.38 |
+16:34:49.2 |
HIP 13786 |
17.97 |
| 2026-03-30 12:00 |
02:58:23.90 |
+16:38:39.8 |
HIP 13786 |
24.86 |
| 2026-03-31 00:00 |
02:58:57.48 |
+16:42:29.9 |
HIP 13786 |
32.75 |
| 2026-03-31 12:00 |
02:59:31.13 |
+16:46:19.6 |
HIP 14098 |
36.69 |
| 2026-04-01 00:00 |
03:00:04.83 |
+16:50:09.0 |
HIP 14098 |
31.68 |
| 2026-04-01 12:00 |
03:00:38.60 |
+16:53:57.8 |
HIP 14098 |
28.63 |
| 2026-04-02 00:00 |
03:01:12.43 |
+16:57:46.3 |
HIP 14098 |
28.19 |
| 2026-04-02 12:00 |
03:01:46.31 |
+17:01:34.3 |
HIP 14098 |
30.50 |
| 2026-04-03 00:00 |
03:02:20.26 |
+17:05:21.9 |
HIP 14183 |
29.66 |
| 2026-04-03 12:00 |
03:02:54.26 |
+17:09:09.0 |
HIP 14183 |
24.79 |
| 2026-04-04 00:00 |
03:03:28.33 |
+17:12:55.7 |
HIP 14183 |
22.58 |
| 2026-04-04 12:00 |
03:04:02.45 |
+17:16:42.0 |
HIP 14183 |
23.81 |
| 2026-04-05 00:00 |
03:04:36.63 |
+17:20:27.8 |
HIP 14183 |
28.03 |
| 2026-04-05 12:00 |
03:05:10.86 |
+17:24:13.2 |
HIP 14183 |
34.15 |
| 2026-04-06 00:00 |
03:05:45.15 |
+17:27:58.1 |
HIP 14514 |
34.50 |
| 2026-04-06 12:00 |
03:06:19.49 |
+17:31:42.6 |
HIP 14514 |
26.33 |
| 2026-04-07 00:00 |
03:06:53.89 |
+17:35:26.6 |
HIP 14514 |
18.93 |
| 2026-04-07 12:00 |
03:07:28.35 |
+17:39:10.2 |
HIP 14514 |
13.64 |
| 2026-04-08 00:00 |
03:08:02.86 |
+17:42:53.3 |
HIP 14514 |
13.29 |
| 2026-04-08 12:00 |
03:08:37.42 |
+17:46:35.9 |
HIP 14683 |
16.88 |
| 2026-04-09 00:00 |
03:09:12.03 |
+17:50:18.1 |
HIP 14683 |
12.82 |
| 2026-04-09 12:00 |
03:09:46.70 |
+17:53:59.9 |
HIP 14683 |
14.38 |
| 2026-04-10 00:00 |
03:10:21.41 |
+17:57:41.1 |
HIP 14683 |
20.32 |
| 2026-04-10 12:00 |
03:10:56.18 |
+18:01:22.0 |
HIP 14721 |
22.29 |
| 2026-04-11 00:00 |
03:11:31.00 |
+18:05:02.3 |
HIP 14721 |
24.87 |
| 2026-04-11 12:00 |
03:12:05.87 |
+18:08:42.2 |
HIP 15062 |
29.81 |
| 2026-04-12 00:00 |
03:12:40.79 |
+18:12:21.6 |
HIP 15062 |
20.80 |
| 2026-04-12 12:00 |
03:13:15.75 |
+18:16:00.5 |
HIP 15062 |
11.86 |
| 2026-04-13 00:00 |
03:13:50.77 |
+18:19:38.9 |
HIP 15062 |
3.61 |
| 2026-04-13 12:00 |
03:14:25.83 |
+18:23:16.9 |
HIP 15062 |
7.08 |
| 2026-04-14 00:00 |
03:15:00.93 |
+18:26:54.4 |
HIP 15062 |
15.88 |
| 2026-04-14 12:00 |
03:15:36.09 |
+18:30:31.4 |
HIP 15062 |
24.88 |
| 2026-04-15 00:00 |
03:16:11.29 |
+18:34:07.9 |
HIP 15062 |
33.94 |
| 2026-04-15 12:00 |
03:16:46.53 |
+18:37:43.9 |
HIP 15412 |
28.75 |
| 2026-04-16 00:00 |
03:17:21.82 |
+18:41:19.4 |
HIP 15412 |
22.84 |