메타데이터
| 항목 |
값 |
| Designation |
45P/Honda-Mrkos-Pajdusakova |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-12-31T06:49:10.395840Z |
| Orbit solution date (soln_date, UTC) |
2022-07-19T02:06:34Z |
| Obs used |
1823 |
| NEO |
Yes |
| M1 |
13.700 |
| K1 |
22.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-08-14.0000000 |
| e |
0.82399608 |
| q (au) |
0.532650 |
| a (au) |
3.026354 |
| i (deg) |
4.248171 |
| Ω (om, deg) |
88.934602 |
| ω (w, deg) |
326.344198 |
| M (ma, deg) |
42.255824 |
밝기
산란 + 전체 선형
$$
M_a = (9.001 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.001 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.852 |
| 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 |
16:21:57.31 |
-21:05:00.9 |
HIP 80276 |
21.00 |
| 2026-09-20 12:00 |
16:22:13.13 |
-21:05:49.6 |
HIP 80276 |
17.56 |
| 2026-09-21 00:00 |
16:22:29.16 |
-21:06:38.7 |
HIP 80276 |
14.27 |
| 2026-09-21 12:00 |
16:22:45.40 |
-21:07:28.2 |
HIP 80276 |
11.27 |
| 2026-09-22 00:00 |
16:23:01.85 |
-21:08:18.0 |
HIP 80276 |
8.97 |
| 2026-09-22 12:00 |
16:23:18.51 |
-21:09:08.1 |
HIP 80276 |
8.04 |
| 2026-09-23 00:00 |
16:23:35.37 |
-21:09:58.5 |
HIP 80276 |
8.99 |
| 2026-09-23 12:00 |
16:23:52.43 |
-21:10:49.3 |
HIP 80276 |
11.40 |
| 2026-09-24 00:00 |
16:24:09.70 |
-21:11:40.4 |
HIP 80276 |
14.62 |
| 2026-09-24 12:00 |
16:24:27.17 |
-21:12:31.8 |
HIP 80276 |
18.24 |
| 2026-09-25 00:00 |
16:24:44.84 |
-21:13:23.5 |
HIP 80276 |
22.10 |
| 2026-09-25 12:00 |
16:25:02.71 |
-21:14:15.5 |
HIP 80276 |
26.11 |
| 2026-09-26 00:00 |
16:25:20.79 |
-21:15:07.8 |
HIP 80458 |
26.19 |
| 2026-09-26 12:00 |
16:25:39.06 |
-21:16:00.4 |
HIP 80458 |
25.54 |
| 2026-09-27 00:00 |
16:25:57.52 |
-21:16:53.3 |
HIP 80458 |
25.63 |
| 2026-09-27 12:00 |
16:26:16.19 |
-21:17:46.4 |
HIP 80458 |
26.47 |
| 2026-09-28 00:00 |
16:26:35.05 |
-21:18:39.8 |
HIP 80458 |
28.02 |
| 2026-09-28 12:00 |
16:26:54.10 |
-21:19:33.5 |
HIP 80534 |
28.68 |
| 2026-09-29 00:00 |
16:27:13.35 |
-21:20:27.4 |
HIP 80534 |
29.04 |
| 2026-09-29 12:00 |
16:27:32.79 |
-21:21:21.6 |
HIP 80756 |
27.96 |
| 2026-09-30 00:00 |
16:27:52.42 |
-21:22:16.0 |
HIP 80756 |
23.51 |
| 2026-09-30 12:00 |
16:28:12.25 |
-21:23:10.7 |
HIP 80756 |
19.13 |
| 2026-10-01 00:00 |
16:28:32.27 |
-21:24:05.6 |
HIP 80756 |
14.91 |
| 2026-10-01 12:00 |
16:28:52.47 |
-21:25:00.7 |
HIP 80756 |
11.10 |
| 2026-10-02 00:00 |
16:29:12.87 |
-21:25:56.0 |
HIP 80756 |
8.35 |
| 2026-10-02 12:00 |
16:29:33.45 |
-21:26:51.6 |
HIP 80756 |
7.95 |
| 2026-10-03 00:00 |
16:29:54.23 |
-21:27:47.3 |
HIP 80756 |
10.24 |
| 2026-10-03 12:00 |
16:30:15.19 |
-21:28:43.3 |
HIP 80851 |
6.04 |
| 2026-10-04 00:00 |
16:30:36.33 |
-21:29:39.4 |
HIP 80851 |
2.68 |
| 2026-10-04 12:00 |
16:30:57.66 |
-21:30:35.8 |
HIP 80851 |
5.33 |
| 2026-10-05 00:00 |
16:31:19.18 |
-21:31:32.3 |
HIP 80851 |
10.08 |
| 2026-10-05 12:00 |
16:31:40.88 |
-21:32:29.0 |
HIP 80975 |
7.78 |
| 2026-10-06 00:00 |
16:32:02.76 |
-21:33:25.9 |
HIP 80975 |
5.59 |
| 2026-10-06 12:00 |
16:32:24.83 |
-21:34:22.9 |
HIP 80975 |
7.47 |
| 2026-10-07 00:00 |
16:32:47.08 |
-21:35:20.1 |
HIP 80975 |
11.65 |
| 2026-10-07 12:00 |
16:33:09.51 |
-21:36:17.5 |
HIP 80975 |
16.50 |
| 2026-10-08 00:00 |
16:33:32.12 |
-21:37:15.0 |
HIP 80975 |
21.60 |
| 2026-10-08 12:00 |
16:33:54.90 |
-21:38:12.6 |
HIP 81235 |
26.21 |
| 2026-10-09 00:00 |
16:34:17.87 |
-21:39:10.4 |
HIP 81235 |
21.34 |
| 2026-10-09 12:00 |
16:34:41.01 |
-21:40:08.3 |
HIP 81235 |
16.77 |
| 2026-10-10 00:00 |
16:35:04.33 |
-21:41:06.3 |
HIP 81235 |
12.90 |
| 2026-10-10 12:00 |
16:35:27.82 |
-21:42:04.4 |
HIP 81235 |
10.59 |
| 2026-10-11 00:00 |
16:35:51.49 |
-21:43:02.6 |
HIP 81235 |
10.93 |