메타데이터
| 항목 |
값 |
| Designation |
387P/Boattini |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-09-05T08:47:45.003840Z |
| Orbit solution date (soln_date, UTC) |
2021-05-02T23:43:04Z |
| Obs used |
347 |
| NEO |
Yes |
| M1 |
14.200 |
| K1 |
20.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-09-02T00:13:13.152000Z |
| Discovery magnitude (MPC) |
15.80 R |
| Discovery observatory (MPC) |
L51 · MARGO, Nauchnyi |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-04-08.0000000 |
| e |
0.73595147 |
| q (au) |
1.267166 |
| a (au) |
4.798990 |
| i (deg) |
8.899824 |
| Ω (om, deg) |
259.355998 |
| ω (w, deg) |
162.776863 |
| M (ma, deg) |
208.931599 |
밝기
산란 + 전체 선형
$$
M_a = (14.112 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.112 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-09-20 00:00 |
16:30:26.91 |
-22:15:18.2 |
HIP 80810 |
12.01 |
| 2026-09-20 12:00 |
16:30:34.84 |
-22:15:26.7 |
HIP 80810 |
12.70 |
| 2026-09-21 00:00 |
16:30:42.88 |
-22:15:35.5 |
HIP 80810 |
13.62 |
| 2026-09-21 12:00 |
16:30:51.04 |
-22:15:44.5 |
HIP 80810 |
14.73 |
| 2026-09-22 00:00 |
16:30:59.31 |
-22:15:53.7 |
HIP 80810 |
16.01 |
| 2026-09-22 12:00 |
16:31:07.70 |
-22:16:03.2 |
HIP 80810 |
17.42 |
| 2026-09-23 00:00 |
16:31:16.19 |
-22:16:12.9 |
HIP 80810 |
18.95 |
| 2026-09-23 12:00 |
16:31:24.81 |
-22:16:22.8 |
HIP 80810 |
20.57 |
| 2026-09-24 00:00 |
16:31:33.53 |
-22:16:33.0 |
HIP 80810 |
22.28 |
| 2026-09-24 12:00 |
16:31:42.36 |
-22:16:43.4 |
HIP 80810 |
24.06 |
| 2026-09-25 00:00 |
16:31:51.31 |
-22:16:54.0 |
HIP 80810 |
25.90 |
| 2026-09-25 12:00 |
16:32:00.36 |
-22:17:04.8 |
HIP 80810 |
27.79 |
| 2026-09-26 00:00 |
16:32:09.53 |
-22:17:15.8 |
HIP 80810 |
29.74 |
| 2026-09-26 12:00 |
16:32:18.80 |
-22:17:27.0 |
HIP 80810 |
31.74 |
| 2026-09-27 00:00 |
16:32:28.18 |
-22:17:38.5 |
HIP 80937 |
32.62 |
| 2026-09-27 12:00 |
16:32:37.67 |
-22:17:50.1 |
HIP 80937 |
33.29 |
| 2026-09-28 00:00 |
16:32:47.27 |
-22:18:02.0 |
HIP 81169 |
32.56 |
| 2026-09-28 12:00 |
16:32:56.98 |
-22:18:14.1 |
HIP 81169 |
30.64 |
| 2026-09-29 00:00 |
16:33:06.79 |
-22:18:26.3 |
HIP 81169 |
28.75 |
| 2026-09-29 12:00 |
16:33:16.70 |
-22:18:38.8 |
HIP 81169 |
26.90 |
| 2026-09-30 00:00 |
16:33:26.73 |
-22:18:51.5 |
HIP 81169 |
25.10 |
| 2026-09-30 12:00 |
16:33:36.85 |
-22:19:04.3 |
HIP 81169 |
23.38 |
| 2026-10-01 00:00 |
16:33:47.09 |
-22:19:17.4 |
HIP 81169 |
21.76 |
| 2026-10-01 12:00 |
16:33:57.42 |
-22:19:30.6 |
HIP 81169 |
20.27 |
| 2026-10-02 00:00 |
16:34:07.86 |
-22:19:44.1 |
HIP 81169 |
18.96 |
| 2026-10-02 12:00 |
16:34:18.40 |
-22:19:57.7 |
HIP 81169 |
17.87 |
| 2026-10-03 00:00 |
16:34:29.05 |
-22:20:11.5 |
HIP 81169 |
17.05 |
| 2026-10-03 12:00 |
16:34:39.79 |
-22:20:25.5 |
HIP 81169 |
16.57 |
| 2026-10-04 00:00 |
16:34:50.64 |
-22:20:39.6 |
HIP 81169 |
16.45 |
| 2026-10-04 12:00 |
16:35:01.59 |
-22:20:53.9 |
HIP 81169 |
16.72 |
| 2026-10-05 00:00 |
16:35:12.64 |
-22:21:08.5 |
HIP 81169 |
17.37 |
| 2026-10-05 12:00 |
16:35:23.78 |
-22:21:23.1 |
HIP 81169 |
18.36 |
| 2026-10-06 00:00 |
16:35:35.03 |
-22:21:38.0 |
HIP 81169 |
19.66 |
| 2026-10-06 12:00 |
16:35:46.38 |
-22:21:53.0 |
HIP 81169 |
21.22 |
| 2026-10-07 00:00 |
16:35:57.82 |
-22:22:08.2 |
HIP 81169 |
22.99 |
| 2026-10-07 12:00 |
16:36:09.36 |
-22:22:23.5 |
HIP 81169 |
24.93 |
| 2026-10-08 00:00 |
16:36:21.00 |
-22:22:39.0 |
HIP 81413 |
26.18 |
| 2026-10-08 12:00 |
16:36:32.73 |
-22:22:54.6 |
HIP 81413 |
24.60 |
| 2026-10-09 00:00 |
16:36:44.56 |
-22:23:10.4 |
HIP 81413 |
23.24 |
| 2026-10-09 12:00 |
16:36:56.49 |
-22:23:26.4 |
HIP 81413 |
22.12 |
| 2026-10-10 00:00 |
16:37:08.51 |
-22:23:42.4 |
HIP 81413 |
21.31 |
| 2026-10-10 12:00 |
16:37:20.62 |
-22:23:58.7 |
HIP 81413 |
20.84 |
| 2026-10-11 00:00 |
16:37:32.82 |
-22:24:15.1 |
HIP 81413 |
20.74 |