메타데이터
| 항목 |
값 |
| Designation |
C/2006 OF2 (Broughton) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-09-15T16:27:21.395520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:59Z |
| Obs used |
4756 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
5.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-07-16.0000000 |
| e |
1.00078340 |
| q (au) |
2.431442 |
| a (au) |
-3103.701825 |
| i (deg) |
30.170433 |
| Ω (om, deg) |
318.508724 |
| ω (w, deg) |
95.611765 |
| M (ma, deg) |
-0.000352 |
밝기
산란 + 전체 선형
$$
M_a = (7.286 + 3.919\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.286 |
| n |
3.919 |
| gf |
1.000 |
| gb |
-0.703 |
| k |
0.800 |
| 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 |
| 2007-08-05 |
2008-09-10 |
-1.1552 |
+1.003 |
| 2008-09-22 |
2009-01-13 |
-12.3341 |
+5.132 |
| 2009-01-13 |
2011-01-09 |
+4.4199 |
-2.467 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
12:23:05.54 |
-32:05:43.8 |
HIP 60317 |
15.72 |
| 2026-07-29 12:00 |
12:23:07.46 |
-32:05:33.6 |
HIP 60317 |
15.97 |
| 2026-07-30 00:00 |
12:23:09.40 |
-32:05:23.6 |
HIP 60317 |
16.22 |
| 2026-07-30 12:00 |
12:23:11.37 |
-32:05:13.8 |
HIP 60317 |
16.49 |
| 2026-07-31 00:00 |
12:23:13.36 |
-32:05:04.3 |
HIP 60317 |
16.78 |
| 2026-07-31 12:00 |
12:23:15.37 |
-32:04:55.0 |
HIP 60317 |
17.07 |
| 2026-08-01 00:00 |
12:23:17.41 |
-32:04:45.9 |
HIP 60317 |
17.39 |
| 2026-08-01 12:00 |
12:23:19.47 |
-32:04:37.1 |
HIP 60317 |
17.71 |
| 2026-08-02 00:00 |
12:23:21.56 |
-32:04:28.4 |
HIP 60317 |
18.04 |
| 2026-08-02 12:00 |
12:23:23.67 |
-32:04:20.0 |
HIP 60317 |
18.39 |
| 2026-08-03 00:00 |
12:23:25.80 |
-32:04:11.8 |
HIP 60317 |
18.75 |
| 2026-08-03 12:00 |
12:23:27.96 |
-32:04:03.9 |
HIP 60317 |
19.12 |
| 2026-08-04 00:00 |
12:23:30.14 |
-32:03:56.2 |
HIP 60317 |
19.50 |
| 2026-08-04 12:00 |
12:23:32.34 |
-32:03:48.7 |
HIP 60317 |
19.89 |
| 2026-08-05 00:00 |
12:23:34.56 |
-32:03:41.4 |
HIP 60317 |
20.29 |
| 2026-08-05 12:00 |
12:23:36.81 |
-32:03:34.4 |
HIP 60317 |
20.70 |
| 2026-08-06 00:00 |
12:23:39.08 |
-32:03:27.6 |
HIP 60317 |
21.12 |
| 2026-08-06 12:00 |
12:23:41.37 |
-32:03:21.0 |
HIP 60317 |
21.55 |
| 2026-08-07 00:00 |
12:23:43.68 |
-32:03:14.7 |
HIP 60317 |
21.98 |
| 2026-08-07 12:00 |
12:23:46.02 |
-32:03:08.6 |
HIP 60317 |
22.43 |
| 2026-08-08 00:00 |
12:23:48.38 |
-32:03:02.7 |
HIP 60317 |
22.88 |
| 2026-08-08 12:00 |
12:23:50.76 |
-32:02:57.1 |
HIP 60317 |
23.34 |
| 2026-08-09 00:00 |
12:23:53.16 |
-32:02:51.7 |
HIP 60317 |
23.81 |
| 2026-08-09 12:00 |
12:23:55.58 |
-32:02:46.5 |
HIP 60317 |
24.28 |
| 2026-08-10 00:00 |
12:23:58.02 |
-32:02:41.6 |
HIP 60317 |
24.77 |
| 2026-08-10 12:00 |
12:24:00.49 |
-32:02:36.9 |
HIP 60317 |
25.26 |
| 2026-08-11 00:00 |
12:24:02.97 |
-32:02:32.4 |
HIP 60317 |
25.75 |
| 2026-08-11 12:00 |
12:24:05.48 |
-32:02:28.2 |
HIP 60317 |
26.26 |
| 2026-08-12 00:00 |
12:24:08.01 |
-32:02:24.2 |
HIP 60317 |
26.77 |
| 2026-08-12 12:00 |
12:24:10.56 |
-32:02:20.4 |
HIP 60317 |
27.28 |
| 2026-08-13 00:00 |
12:24:13.13 |
-32:02:16.9 |
HIP 60687 |
26.94 |
| 2026-08-13 12:00 |
12:24:15.71 |
-32:02:13.6 |
HIP 60687 |
26.42 |
| 2026-08-14 00:00 |
12:24:18.32 |
-32:02:10.6 |
HIP 60687 |
25.91 |
| 2026-08-14 12:00 |
12:24:20.95 |
-32:02:07.8 |
HIP 60687 |
25.38 |
| 2026-08-15 00:00 |
12:24:23.60 |
-32:02:05.2 |
HIP 60687 |
24.85 |
| 2026-08-15 12:00 |
12:24:26.27 |
-32:02:02.9 |
HIP 60687 |
24.32 |
| 2026-08-16 00:00 |
12:24:28.95 |
-32:02:00.8 |
HIP 60687 |
23.79 |
| 2026-08-16 12:00 |
12:24:31.66 |
-32:01:59.0 |
HIP 60687 |
23.25 |
| 2026-08-17 00:00 |
12:24:34.38 |
-32:01:57.3 |
HIP 60687 |
22.71 |
| 2026-08-17 12:00 |
12:24:37.12 |
-32:01:56.0 |
HIP 60687 |
22.17 |
| 2026-08-18 00:00 |
12:24:39.89 |
-32:01:54.8 |
HIP 60687 |
21.62 |
| 2026-08-18 12:00 |
12:24:42.66 |
-32:01:53.9 |
HIP 60687 |
21.07 |
| 2026-08-19 00:00 |
12:24:45.46 |
-32:01:53.3 |
HIP 60687 |
20.52 |