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) |
| 2026-09-20 00:00 |
09:16:03.60 |
-75:18:55.3 |
HIP 45356 |
5.76 |
| 2026-09-20 12:00 |
09:16:10.76 |
-75:19:21.5 |
HIP 45356 |
6.31 |
| 2026-09-21 00:00 |
09:16:17.87 |
-75:19:48.0 |
HIP 45356 |
6.86 |
| 2026-09-21 12:00 |
09:16:24.93 |
-75:20:14.6 |
HIP 45356 |
7.43 |
| 2026-09-22 00:00 |
09:16:31.94 |
-75:20:41.5 |
HIP 45356 |
8.00 |
| 2026-09-22 12:00 |
09:16:38.90 |
-75:21:08.6 |
HIP 45356 |
8.58 |
| 2026-09-23 00:00 |
09:16:45.81 |
-75:21:35.9 |
HIP 45356 |
9.16 |
| 2026-09-23 12:00 |
09:16:52.67 |
-75:22:03.5 |
HIP 45356 |
9.75 |
| 2026-09-24 00:00 |
09:16:59.49 |
-75:22:31.3 |
HIP 45356 |
10.35 |
| 2026-09-24 12:00 |
09:17:06.25 |
-75:22:59.2 |
HIP 45356 |
10.94 |
| 2026-09-25 00:00 |
09:17:12.96 |
-75:23:27.5 |
HIP 45356 |
11.54 |
| 2026-09-25 12:00 |
09:17:19.61 |
-75:23:55.9 |
HIP 45356 |
12.14 |
| 2026-09-26 00:00 |
09:17:26.22 |
-75:24:24.5 |
HIP 45356 |
12.74 |
| 2026-09-26 12:00 |
09:17:32.77 |
-75:24:53.4 |
HIP 45356 |
13.35 |
| 2026-09-27 00:00 |
09:17:39.27 |
-75:25:22.4 |
HIP 45356 |
13.95 |
| 2026-09-27 12:00 |
09:17:45.71 |
-75:25:51.7 |
HIP 45850 |
14.22 |
| 2026-09-28 00:00 |
09:17:52.10 |
-75:26:21.2 |
HIP 45850 |
14.17 |
| 2026-09-28 12:00 |
09:17:58.44 |
-75:26:50.9 |
HIP 45850 |
14.16 |
| 2026-09-29 00:00 |
09:18:04.72 |
-75:27:20.8 |
HIP 45850 |
14.18 |
| 2026-09-29 12:00 |
09:18:10.94 |
-75:27:50.9 |
HIP 45850 |
14.23 |
| 2026-09-30 00:00 |
09:18:17.11 |
-75:28:21.2 |
HIP 45850 |
14.32 |
| 2026-09-30 12:00 |
09:18:23.22 |
-75:28:51.7 |
HIP 45850 |
14.44 |
| 2026-10-01 00:00 |
09:18:29.28 |
-75:29:22.4 |
HIP 45850 |
14.59 |
| 2026-10-01 12:00 |
09:18:35.27 |
-75:29:53.3 |
HIP 45803 |
14.62 |
| 2026-10-02 00:00 |
09:18:41.21 |
-75:30:24.4 |
HIP 45803 |
13.99 |
| 2026-10-02 12:00 |
09:18:47.09 |
-75:30:55.7 |
HIP 45803 |
13.36 |
| 2026-10-03 00:00 |
09:18:52.91 |
-75:31:27.2 |
HIP 45803 |
12.72 |
| 2026-10-03 12:00 |
09:18:58.68 |
-75:31:58.8 |
HIP 45803 |
12.09 |
| 2026-10-04 00:00 |
09:19:04.38 |
-75:32:30.7 |
HIP 45803 |
11.46 |
| 2026-10-04 12:00 |
09:19:10.02 |
-75:33:02.8 |
HIP 45803 |
10.82 |
| 2026-10-05 00:00 |
09:19:15.60 |
-75:33:35.0 |
HIP 45803 |
10.19 |
| 2026-10-05 12:00 |
09:19:21.11 |
-75:34:07.4 |
HIP 45803 |
9.55 |
| 2026-10-06 00:00 |
09:19:26.57 |
-75:34:40.0 |
HIP 45803 |
8.92 |
| 2026-10-06 12:00 |
09:19:31.96 |
-75:35:12.8 |
HIP 45803 |
8.28 |
| 2026-10-07 00:00 |
09:19:37.29 |
-75:35:45.8 |
HIP 45803 |
7.65 |
| 2026-10-07 12:00 |
09:19:42.56 |
-75:36:18.9 |
HIP 45803 |
7.01 |
| 2026-10-08 00:00 |
09:19:47.76 |
-75:36:52.2 |
HIP 45803 |
6.38 |
| 2026-10-08 12:00 |
09:19:52.89 |
-75:37:25.7 |
HIP 45803 |
5.74 |
| 2026-10-09 00:00 |
09:19:57.96 |
-75:37:59.4 |
HIP 45803 |
5.11 |
| 2026-10-09 12:00 |
09:20:02.97 |
-75:38:33.2 |
HIP 45803 |
4.47 |
| 2026-10-10 00:00 |
09:20:07.90 |
-75:39:07.2 |
HIP 45803 |
3.84 |
| 2026-10-10 12:00 |
09:20:12.78 |
-75:39:41.3 |
HIP 45803 |
3.21 |
| 2026-10-11 00:00 |
09:20:17.58 |
-75:40:15.6 |
HIP 45803 |
2.59 |