메타데이터
| 항목 |
값 |
| Designation |
C/2002 O4 (Hoenig) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-10-01T23:33:55.399680Z |
| Orbit solution date (soln_date, UTC) |
2021-11-20T19:12:51Z |
| Obs used |
1195 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
8.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-08-13.0000000 |
| e |
1.00085552 |
| q (au) |
0.776209 |
| a (au) |
-907.293712 |
| i (deg) |
73.126827 |
| Ω (om, deg) |
321.040639 |
| ω (w, deg) |
105.936774 |
| M (ma, deg) |
-0.001803 |
밝기
산란 + 전체 선형
$$
M_a = (9.577 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.577 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2002-07-22 |
2002-08-14 |
+37.8142 |
-4.484 |
| 2002-08-14 |
2002-10-01 |
-12.0631 |
+0.022 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
08:46:32.41 |
-76:54:58.1 |
HIP 42948 |
6.85 |
| 2026-03-26 12:00 |
08:46:26.01 |
-76:54:27.4 |
HIP 42948 |
6.22 |
| 2026-03-27 00:00 |
08:46:19.70 |
-76:53:56.5 |
HIP 42948 |
5.60 |
| 2026-03-27 12:00 |
08:46:13.48 |
-76:53:25.4 |
HIP 42948 |
4.97 |
| 2026-03-28 00:00 |
08:46:07.34 |
-76:52:54.1 |
HIP 42948 |
4.35 |
| 2026-03-28 12:00 |
08:46:01.30 |
-76:52:22.6 |
HIP 42948 |
3.73 |
| 2026-03-29 00:00 |
08:45:55.34 |
-76:51:51.0 |
HIP 42948 |
3.11 |
| 2026-03-29 12:00 |
08:45:49.48 |
-76:51:19.1 |
HIP 42948 |
2.50 |
| 2026-03-30 00:00 |
08:45:43.70 |
-76:50:47.1 |
HIP 42948 |
1.91 |
| 2026-03-30 12:00 |
08:45:38.01 |
-76:50:14.8 |
HIP 42948 |
1.34 |
| 2026-03-31 00:00 |
08:45:32.42 |
-76:49:42.4 |
HIP 42948 |
0.87 |
| 2026-03-31 12:00 |
08:45:26.92 |
-76:49:09.8 |
HIP 42948 |
0.71 |
| 2026-04-01 00:00 |
08:45:21.50 |
-76:48:37.1 |
HIP 42948 |
1.02 |
| 2026-04-01 12:00 |
08:45:16.18 |
-76:48:04.2 |
HIP 42948 |
1.55 |
| 2026-04-02 00:00 |
08:45:10.95 |
-76:47:31.1 |
HIP 42948 |
2.13 |
| 2026-04-02 12:00 |
08:45:05.81 |
-76:46:57.8 |
HIP 42948 |
2.73 |
| 2026-04-03 00:00 |
08:45:00.76 |
-76:46:24.4 |
HIP 42948 |
3.34 |
| 2026-04-03 12:00 |
08:44:55.80 |
-76:45:50.8 |
HIP 42948 |
3.96 |
| 2026-04-04 00:00 |
08:44:50.94 |
-76:45:17.1 |
HIP 42948 |
4.58 |
| 2026-04-04 12:00 |
08:44:46.17 |
-76:44:43.2 |
HIP 42948 |
5.21 |
| 2026-04-05 00:00 |
08:44:41.49 |
-76:44:09.2 |
HIP 42948 |
5.83 |
| 2026-04-05 12:00 |
08:44:36.90 |
-76:43:35.0 |
HIP 42948 |
6.46 |
| 2026-04-06 00:00 |
08:44:32.40 |
-76:43:00.7 |
HIP 42948 |
7.08 |
| 2026-04-06 12:00 |
08:44:28.00 |
-76:42:26.2 |
HIP 42948 |
7.71 |
| 2026-04-07 00:00 |
08:44:23.69 |
-76:41:51.6 |
HIP 42948 |
8.34 |
| 2026-04-07 12:00 |
08:44:19.48 |
-76:41:16.8 |
HIP 42948 |
8.97 |
| 2026-04-08 00:00 |
08:44:15.36 |
-76:40:42.0 |
HIP 42948 |
9.59 |
| 2026-04-08 12:00 |
08:44:11.33 |
-76:40:07.0 |
HIP 42948 |
10.22 |
| 2026-04-09 00:00 |
08:44:07.39 |
-76:39:31.8 |
HIP 42948 |
10.85 |
| 2026-04-09 12:00 |
08:44:03.55 |
-76:38:56.5 |
HIP 42948 |
11.48 |
| 2026-04-10 00:00 |
08:43:59.80 |
-76:38:21.2 |
HIP 42948 |
12.11 |
| 2026-04-10 12:00 |
08:43:56.15 |
-76:37:45.7 |
HIP 42948 |
12.73 |
| 2026-04-11 00:00 |
08:43:52.59 |
-76:37:10.0 |
HIP 42948 |
13.36 |
| 2026-04-11 12:00 |
08:43:49.12 |
-76:36:34.3 |
HIP 42948 |
13.99 |
| 2026-04-12 00:00 |
08:43:45.75 |
-76:35:58.4 |
HIP 42948 |
14.62 |
| 2026-04-12 12:00 |
08:43:42.47 |
-76:35:22.5 |
HIP 42948 |
15.25 |
| 2026-04-13 00:00 |
08:43:39.29 |
-76:34:46.4 |
HIP 42948 |
15.87 |
| 2026-04-13 12:00 |
08:43:36.20 |
-76:34:10.3 |
HIP 42948 |
16.50 |
| 2026-04-14 00:00 |
08:43:33.20 |
-76:33:34.0 |
HIP 42948 |
17.13 |
| 2026-04-14 12:00 |
08:43:30.30 |
-76:32:57.7 |
HIP 42948 |
17.75 |
| 2026-04-15 00:00 |
08:43:27.50 |
-76:32:21.2 |
HIP 42948 |
18.38 |
| 2026-04-15 12:00 |
08:43:24.79 |
-76:31:44.7 |
HIP 42948 |
19.01 |
| 2026-04-16 00:00 |
08:43:22.17 |
-76:31:08.1 |
HIP 42948 |
19.63 |