메타데이터
| 항목 |
값 |
| Designation |
52P/Harrington-Abell |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-03-07T08:33:30.715200Z |
| Orbit solution date (soln_date, UTC) |
2023-12-07T09:27:11Z |
| Obs used |
1164 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
16.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-07-09.0000000 |
| e |
0.54004886 |
| q (au) |
1.775054 |
| a (au) |
3.859222 |
| i (deg) |
10.231762 |
| Ω (om, deg) |
336.835681 |
| ω (w, deg) |
139.660705 |
| M (ma, deg) |
111.106469 |
밝기
산란 + 전체 선형
$$
M_a = (11.377 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.377 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.989 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2020-09-13 |
2022-02-27 |
+11.7519 |
-3.355 |
| 2022-02-27 |
2022-05-26 |
-2.1491 |
+1.106 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
21:40:28.20 |
-18:57:13.5 |
HIP 107032 |
3.82 |
| 2026-06-01 12:00 |
21:40:27.90 |
-18:57:24.6 |
HIP 107032 |
4.02 |
| 2026-06-02 00:00 |
21:40:27.42 |
-18:57:36.6 |
HIP 107032 |
4.24 |
| 2026-06-02 12:00 |
21:40:26.76 |
-18:57:49.4 |
HIP 107032 |
4.50 |
| 2026-06-03 00:00 |
21:40:25.93 |
-18:58:03.1 |
HIP 107032 |
4.79 |
| 2026-06-03 12:00 |
21:40:24.92 |
-18:58:17.5 |
HIP 107032 |
5.12 |
| 2026-06-04 00:00 |
21:40:23.73 |
-18:58:32.8 |
HIP 107032 |
5.47 |
| 2026-06-04 12:00 |
21:40:22.36 |
-18:58:48.8 |
HIP 107032 |
5.86 |
| 2026-06-05 00:00 |
21:40:20.81 |
-18:59:05.7 |
HIP 107032 |
6.29 |
| 2026-06-05 12:00 |
21:40:19.09 |
-18:59:23.4 |
HIP 107032 |
6.76 |
| 2026-06-06 00:00 |
21:40:17.18 |
-18:59:41.9 |
HIP 107032 |
7.27 |
| 2026-06-06 12:00 |
21:40:15.10 |
-19:00:01.2 |
HIP 107032 |
7.82 |
| 2026-06-07 00:00 |
21:40:12.83 |
-19:00:21.3 |
HIP 107032 |
8.41 |
| 2026-06-07 12:00 |
21:40:10.39 |
-19:00:42.3 |
HIP 107032 |
9.04 |
| 2026-06-08 00:00 |
21:40:07.76 |
-19:01:04.0 |
HIP 107032 |
9.72 |
| 2026-06-08 12:00 |
21:40:04.95 |
-19:01:26.5 |
HIP 107032 |
10.44 |
| 2026-06-09 00:00 |
21:40:01.96 |
-19:01:49.9 |
HIP 107032 |
11.21 |
| 2026-06-09 12:00 |
21:39:58.79 |
-19:02:14.0 |
HIP 107032 |
12.02 |
| 2026-06-10 00:00 |
21:39:55.44 |
-19:02:38.9 |
HIP 107032 |
12.88 |
| 2026-06-10 12:00 |
21:39:51.91 |
-19:03:04.7 |
HIP 107032 |
13.78 |
| 2026-06-11 00:00 |
21:39:48.19 |
-19:03:31.2 |
HIP 107032 |
14.73 |
| 2026-06-11 12:00 |
21:39:44.29 |
-19:03:58.5 |
HIP 107032 |
15.72 |
| 2026-06-12 00:00 |
21:39:40.21 |
-19:04:26.6 |
HIP 107032 |
16.76 |
| 2026-06-12 12:00 |
21:39:35.95 |
-19:04:55.5 |
HIP 107032 |
17.85 |
| 2026-06-13 00:00 |
21:39:31.51 |
-19:05:25.2 |
HIP 107032 |
18.98 |
| 2026-06-13 12:00 |
21:39:26.88 |
-19:05:55.7 |
HIP 107032 |
20.15 |
| 2026-06-14 00:00 |
21:39:22.07 |
-19:06:26.9 |
HIP 107032 |
21.37 |
| 2026-06-14 12:00 |
21:39:17.08 |
-19:06:58.9 |
HIP 107032 |
22.64 |
| 2026-06-15 00:00 |
21:39:11.90 |
-19:07:31.7 |
HIP 106768 |
23.14 |
| 2026-06-15 12:00 |
21:39:06.55 |
-19:08:05.2 |
HIP 106768 |
21.77 |
| 2026-06-16 00:00 |
21:39:01.01 |
-19:08:39.5 |
HIP 106768 |
20.35 |
| 2026-06-16 12:00 |
21:38:55.29 |
-19:09:14.5 |
HIP 106768 |
18.90 |
| 2026-06-17 00:00 |
21:38:49.39 |
-19:09:50.3 |
HIP 106768 |
17.40 |
| 2026-06-17 12:00 |
21:38:43.30 |
-19:10:26.8 |
HIP 106768 |
15.87 |
| 2026-06-18 00:00 |
21:38:37.04 |
-19:11:04.1 |
HIP 106768 |
14.29 |
| 2026-06-18 12:00 |
21:38:30.60 |
-19:11:42.1 |
HIP 106768 |
12.68 |
| 2026-06-19 00:00 |
21:38:23.98 |
-19:12:20.8 |
HIP 106768 |
11.04 |
| 2026-06-19 12:00 |
21:38:17.18 |
-19:13:00.2 |
HIP 106768 |
9.37 |
| 2026-06-20 00:00 |
21:38:10.19 |
-19:13:40.3 |
HIP 106768 |
7.68 |
| 2026-06-20 12:00 |
21:38:03.04 |
-19:14:21.2 |
HIP 106768 |
6.01 |
| 2026-06-21 00:00 |
21:37:55.70 |
-19:15:02.7 |
HIP 106768 |
4.42 |
| 2026-06-21 12:00 |
21:37:48.18 |
-19:15:44.9 |
HIP 106768 |
3.12 |
| 2026-06-22 00:00 |
21:37:40.49 |
-19:16:27.8 |
HIP 106768 |
2.69 |