메타데이터
| 항목 |
값 |
| Designation |
398P/Boattini |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-12-26T17:48:53.328960Z |
| Orbit solution date (soln_date, UTC) |
2026-07-28T20:12:22Z |
| Obs used |
1649 |
| NEO |
- |
| M1 |
15.200 |
| K1 |
11.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2020-08-11T13:58:29.683200Z |
| Discovery magnitude (MPC) |
19.11 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-11-13.0000000 |
| e |
0.58256104 |
| q (au) |
1.305705 |
| a (au) |
3.127894 |
| i (deg) |
11.015214 |
| Ω (om, deg) |
127.464427 |
| ω (w, deg) |
320.231221 |
| M (ma, deg) |
352.206590 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.883 |
| k |
0.995 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
10:33:52.18 |
+11:02:31.9 |
HIP 51532 |
35.09 |
| 2026-09-20 12:00 |
10:35:15.10 |
+10:56:47.7 |
HIP 51945 |
22.04 |
| 2026-09-21 00:00 |
10:36:37.77 |
+10:51:03.3 |
HIP 51945 |
10.35 |
| 2026-09-21 12:00 |
10:38:00.19 |
+10:45:18.6 |
HIP 51997 |
9.68 |
| 2026-09-22 00:00 |
10:39:22.37 |
+10:39:33.7 |
HIP 52198 |
21.03 |
| 2026-09-22 12:00 |
10:40:44.31 |
+10:33:48.6 |
HIP 52198 |
19.02 |
| 2026-09-23 00:00 |
10:42:05.99 |
+10:28:03.4 |
HIP 52373 |
7.22 |
| 2026-09-23 12:00 |
10:43:27.44 |
+10:22:18.0 |
HIP 52532 |
14.41 |
| 2026-09-24 00:00 |
10:44:48.63 |
+10:16:32.6 |
HIP 52532 |
8.15 |
| 2026-09-24 12:00 |
10:46:09.59 |
+10:10:47.0 |
HIP 52625 |
11.50 |
| 2026-09-25 00:00 |
10:47:30.31 |
+10:05:01.4 |
HIP 52809 |
21.95 |
| 2026-09-25 12:00 |
10:48:50.78 |
+09:59:15.7 |
HIP 52893 |
10.67 |
| 2026-09-26 00:00 |
10:50:11.02 |
+09:53:30.0 |
HIP 52966 |
5.21 |
| 2026-09-26 12:00 |
10:51:31.01 |
+09:47:44.4 |
HIP 52966 |
23.03 |
| 2026-09-27 00:00 |
10:52:50.77 |
+09:41:58.7 |
HIP 53238 |
8.54 |
| 2026-09-27 12:00 |
10:54:10.29 |
+09:36:13.1 |
HIP 53238 |
14.02 |
| 2026-09-28 00:00 |
10:55:29.58 |
+09:30:27.6 |
HIP 53238 |
33.93 |
| 2026-09-28 12:00 |
10:56:48.63 |
+09:24:42.2 |
HIP 53596 |
22.70 |
| 2026-09-29 00:00 |
10:58:07.45 |
+09:18:56.9 |
HIP 53591 |
18.38 |
| 2026-09-29 12:00 |
10:59:26.03 |
+09:13:11.8 |
HIP 53591 |
26.77 |
| 2026-09-30 00:00 |
11:00:44.38 |
+09:07:26.8 |
HIP 53977 |
26.94 |
| 2026-09-30 12:00 |
11:02:02.50 |
+09:01:42.0 |
HIP 53943 |
10.03 |
| 2026-10-01 00:00 |
11:03:20.39 |
+08:55:57.4 |
HIP 53943 |
16.51 |
| 2026-10-01 12:00 |
11:04:38.05 |
+08:50:13.1 |
HIP 53943 |
35.31 |
| 2026-10-02 00:00 |
11:05:55.48 |
+08:44:29.0 |
HIP 54417 |
36.46 |
| 2026-10-02 12:00 |
11:07:12.68 |
+08:38:45.1 |
HIP 54417 |
26.24 |
| 2026-10-03 00:00 |
11:08:29.66 |
+08:33:01.6 |
HIP 54417 |
28.98 |
| 2026-10-03 12:00 |
11:09:46.40 |
+08:27:18.4 |
HIP 54604 |
35.54 |
| 2026-10-04 00:00 |
11:11:02.93 |
+08:21:35.6 |
HIP 54604 |
29.19 |
| 2026-10-04 12:00 |
11:12:19.22 |
+08:15:53.1 |
HIP 54789 |
22.17 |
| 2026-10-05 00:00 |
11:13:35.29 |
+08:10:11.0 |
HIP 54863 |
9.25 |
| 2026-10-05 12:00 |
11:14:51.14 |
+08:04:29.3 |
HIP 54863 |
12.24 |
| 2026-10-06 00:00 |
11:16:06.76 |
+07:58:48.0 |
HIP 55122 |
20.92 |
| 2026-10-06 12:00 |
11:17:22.16 |
+07:53:07.2 |
HIP 55122 |
8.97 |
| 2026-10-07 00:00 |
11:18:37.34 |
+07:47:26.9 |
HIP 55122 |
21.98 |
| 2026-10-07 12:00 |
11:19:52.29 |
+07:41:47.1 |
HIP 55337 |
7.15 |
| 2026-10-08 00:00 |
11:21:07.03 |
+07:36:07.7 |
HIP 55337 |
17.57 |
| 2026-10-08 12:00 |
11:22:21.54 |
+07:30:29.0 |
HIP 55427 |
33.05 |
| 2026-10-09 00:00 |
11:23:35.83 |
+07:24:50.8 |
HIP 55605 |
23.38 |
| 2026-10-09 12:00 |
11:24:49.90 |
+07:19:13.2 |
HIP 55605 |
26.63 |
| 2026-10-10 00:00 |
11:26:03.75 |
+07:13:36.2 |
HIP 55988 |
39.84 |
| 2026-10-10 12:00 |
11:27:17.38 |
+07:07:59.8 |
HIP 55988 |
29.07 |
| 2026-10-11 00:00 |
11:28:30.80 |
+07:02:24.1 |
HIP 56046 |
17.66 |