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
$$
M_a = (8.983 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.983 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-03-26 00:00 |
17:33:42.62 |
-22:02:47.6 |
HIP 85925 |
7.73 |
| 2026-03-26 12:00 |
17:33:44.79 |
-22:02:46.9 |
HIP 85925 |
7.88 |
| 2026-03-27 00:00 |
17:33:46.72 |
-22:02:46.0 |
HIP 85925 |
8.04 |
| 2026-03-27 12:00 |
17:33:48.42 |
-22:02:45.0 |
HIP 85925 |
8.20 |
| 2026-03-28 00:00 |
17:33:49.89 |
-22:02:43.9 |
HIP 85925 |
8.36 |
| 2026-03-28 12:00 |
17:33:51.12 |
-22:02:42.6 |
HIP 85925 |
8.50 |
| 2026-03-29 00:00 |
17:33:52.11 |
-22:02:41.1 |
HIP 85925 |
8.63 |
| 2026-03-29 12:00 |
17:33:52.86 |
-22:02:39.6 |
HIP 85925 |
8.73 |
| 2026-03-30 00:00 |
17:33:53.38 |
-22:02:37.8 |
HIP 85925 |
8.82 |
| 2026-03-30 12:00 |
17:33:53.66 |
-22:02:36.0 |
HIP 85925 |
8.88 |
| 2026-03-31 00:00 |
17:33:53.70 |
-22:02:34.0 |
HIP 85925 |
8.91 |
| 2026-03-31 12:00 |
17:33:53.49 |
-22:02:31.9 |
HIP 85925 |
8.92 |
| 2026-04-01 00:00 |
17:33:53.05 |
-22:02:29.6 |
HIP 85925 |
8.90 |
| 2026-04-01 12:00 |
17:33:52.36 |
-22:02:27.2 |
HIP 85925 |
8.86 |
| 2026-04-02 00:00 |
17:33:51.42 |
-22:02:24.6 |
HIP 85925 |
8.80 |
| 2026-04-02 12:00 |
17:33:50.25 |
-22:02:21.9 |
HIP 85925 |
8.72 |
| 2026-04-03 00:00 |
17:33:48.82 |
-22:02:19.1 |
HIP 85925 |
8.64 |
| 2026-04-03 12:00 |
17:33:47.15 |
-22:02:16.1 |
HIP 85925 |
8.54 |
| 2026-04-04 00:00 |
17:33:45.23 |
-22:02:13.0 |
HIP 85925 |
8.45 |
| 2026-04-04 12:00 |
17:33:43.06 |
-22:02:09.7 |
HIP 85925 |
8.37 |
| 2026-04-05 00:00 |
17:33:40.64 |
-22:02:06.3 |
HIP 85925 |
8.31 |
| 2026-04-05 12:00 |
17:33:37.97 |
-22:02:02.8 |
HIP 85925 |
8.29 |
| 2026-04-06 00:00 |
17:33:35.05 |
-22:01:59.1 |
HIP 85925 |
8.32 |
| 2026-04-06 12:00 |
17:33:31.87 |
-22:01:55.2 |
HIP 85925 |
8.40 |
| 2026-04-07 00:00 |
17:33:28.44 |
-22:01:51.2 |
HIP 85925 |
8.56 |
| 2026-04-07 12:00 |
17:33:24.76 |
-22:01:47.1 |
HIP 85925 |
8.81 |
| 2026-04-08 00:00 |
17:33:20.82 |
-22:01:42.8 |
HIP 85925 |
9.16 |
| 2026-04-08 12:00 |
17:33:16.62 |
-22:01:38.4 |
HIP 85925 |
9.61 |
| 2026-04-09 00:00 |
17:33:12.17 |
-22:01:33.8 |
HIP 85925 |
10.16 |
| 2026-04-09 12:00 |
17:33:07.46 |
-22:01:29.1 |
HIP 85925 |
10.82 |
| 2026-04-10 00:00 |
17:33:02.49 |
-22:01:24.2 |
HIP 85925 |
11.59 |
| 2026-04-10 12:00 |
17:32:57.26 |
-22:01:19.2 |
HIP 85925 |
12.46 |
| 2026-04-11 00:00 |
17:32:51.77 |
-22:01:14.0 |
HIP 85925 |
13.44 |
| 2026-04-11 12:00 |
17:32:46.03 |
-22:01:08.6 |
HIP 85925 |
14.50 |
| 2026-04-12 00:00 |
17:32:40.01 |
-22:01:03.1 |
HIP 85925 |
15.66 |
| 2026-04-12 12:00 |
17:32:33.74 |
-22:00:57.5 |
HIP 85925 |
16.91 |
| 2026-04-13 00:00 |
17:32:27.21 |
-22:00:51.7 |
HIP 85925 |
18.24 |
| 2026-04-13 12:00 |
17:32:20.41 |
-22:00:45.7 |
HIP 85925 |
19.65 |
| 2026-04-14 00:00 |
17:32:13.34 |
-22:00:39.6 |
HIP 85925 |
21.14 |
| 2026-04-14 12:00 |
17:32:06.02 |
-22:00:33.3 |
HIP 85925 |
22.71 |
| 2026-04-15 00:00 |
17:31:58.42 |
-22:00:26.8 |
HIP 85925 |
24.36 |
| 2026-04-15 12:00 |
17:31:50.57 |
-22:00:20.2 |
HIP 85925 |
26.07 |
| 2026-04-16 00:00 |
17:31:42.45 |
-22:00:13.4 |
HIP 85925 |
27.86 |