C/2001 OG108 (LONEOS)
메타데이터
| 항목 |
값 |
| Designation |
C/2001 OG108 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-03-15T04:56:44.543040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:10Z |
| Obs used |
882 |
| NEO |
Yes |
| M1 |
13.300 |
| K1 |
11.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2001-12-05.0000000 |
| e |
0.92526008 |
| q (au) |
0.994048 |
| a (au) |
13.300093 |
| i (deg) |
80.245059 |
| Ω (om, deg) |
10.555290 |
| ω (w, deg) |
116.419511 |
| M (ma, deg) |
357.963820 |
밝기
산란 + 전체 선형
$$
M_a = (10.668 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.668 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.831 |
| 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 |
| 2001-08-27 |
2002-02-03 |
+1.6625 |
+1.044 |
| 2002-02-03 |
2002-03-15 |
+16.7740 |
-0.745 |
| 2002-03-15 |
2002-04-29 |
+26.2855 |
-0.105 |
| 2002-04-29 |
2002-06-05 |
-11.8897 |
+2.380 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
01:53:26.83 |
-56:44:34.7 |
HIP 8780 |
7.26 |
| 2026-02-03 12:00 |
01:53:28.45 |
-56:43:26.3 |
HIP 8780 |
6.51 |
| 2026-02-04 00:00 |
01:53:30.14 |
-56:42:18.0 |
HIP 8780 |
5.91 |
| 2026-02-04 12:00 |
01:53:31.89 |
-56:41:09.8 |
HIP 8780 |
5.49 |
| 2026-02-05 00:00 |
01:53:33.71 |
-56:40:01.6 |
HIP 8780 |
5.31 |
| 2026-02-05 12:00 |
01:53:35.59 |
-56:38:53.6 |
HIP 8780 |
5.39 |
| 2026-02-06 00:00 |
01:53:37.54 |
-56:37:45.6 |
HIP 8780 |
5.72 |
| 2026-02-06 12:00 |
01:53:39.55 |
-56:36:37.7 |
HIP 8780 |
6.26 |
| 2026-02-07 00:00 |
01:53:41.62 |
-56:35:29.9 |
HIP 8780 |
6.96 |
| 2026-02-07 12:00 |
01:53:43.76 |
-56:34:22.2 |
HIP 8780 |
7.78 |
| 2026-02-08 00:00 |
01:53:45.95 |
-56:33:14.6 |
HIP 8780 |
8.69 |
| 2026-02-08 12:00 |
01:53:48.22 |
-56:32:07.2 |
HIP 8780 |
9.66 |
| 2026-02-09 00:00 |
01:53:50.54 |
-56:30:59.8 |
HIP 8780 |
10.67 |
| 2026-02-09 12:00 |
01:53:52.92 |
-56:29:52.5 |
HIP 8767 |
11.71 |
| 2026-02-10 00:00 |
01:53:55.37 |
-56:28:45.4 |
HIP 8767 |
11.29 |
| 2026-02-10 12:00 |
01:53:57.88 |
-56:27:38.4 |
HIP 8767 |
10.99 |
| 2026-02-11 00:00 |
01:54:00.45 |
-56:26:31.5 |
HIP 8767 |
10.82 |
| 2026-02-11 12:00 |
01:54:03.08 |
-56:25:24.8 |
HIP 8767 |
10.79 |
| 2026-02-12 00:00 |
01:54:05.77 |
-56:24:18.2 |
HIP 8767 |
10.89 |
| 2026-02-12 12:00 |
01:54:08.52 |
-56:23:11.7 |
HIP 8767 |
11.12 |
| 2026-02-13 00:00 |
01:54:11.33 |
-56:22:05.4 |
HIP 8767 |
11.48 |
| 2026-02-13 12:00 |
01:54:14.20 |
-56:20:59.3 |
HIP 8767 |
11.94 |
| 2026-02-14 00:00 |
01:54:17.13 |
-56:19:53.3 |
HIP 8767 |
12.51 |
| 2026-02-14 12:00 |
01:54:20.12 |
-56:18:47.5 |
HIP 8767 |
13.17 |
| 2026-02-15 00:00 |
01:54:23.17 |
-56:17:41.8 |
HIP 8767 |
13.90 |
| 2026-02-15 12:00 |
01:54:26.27 |
-56:16:36.3 |
HIP 8767 |
14.70 |
| 2026-02-16 00:00 |
01:54:29.44 |
-56:15:31.0 |
HIP 8767 |
15.55 |
| 2026-02-16 12:00 |
01:54:32.66 |
-56:14:25.8 |
HIP 8767 |
16.45 |
| 2026-02-17 00:00 |
01:54:35.94 |
-56:13:20.9 |
HIP 8767 |
17.38 |
| 2026-02-17 12:00 |
01:54:39.27 |
-56:12:16.1 |
HIP 8767 |
18.35 |
| 2026-02-18 00:00 |
01:54:42.67 |
-56:11:11.5 |
HIP 8767 |
19.35 |
| 2026-02-18 12:00 |
01:54:46.12 |
-56:10:07.1 |
HIP 8767 |
20.37 |
| 2026-02-19 00:00 |
01:54:49.62 |
-56:09:03.0 |
HIP 8767 |
21.41 |
| 2026-02-19 12:00 |
01:54:53.18 |
-56:07:59.0 |
HIP 8767 |
22.46 |
| 2026-02-20 00:00 |
01:54:56.80 |
-56:06:55.2 |
HIP 8767 |
23.53 |
| 2026-02-20 12:00 |
01:55:00.47 |
-56:05:51.7 |
HIP 8767 |
24.62 |
| 2026-02-21 00:00 |
01:55:04.19 |
-56:04:48.3 |
HIP 8767 |
25.72 |
| 2026-02-21 12:00 |
01:55:07.97 |
-56:03:45.2 |
HIP 8767 |
26.82 |
| 2026-02-22 00:00 |
01:55:11.80 |
-56:02:42.4 |
HIP 8767 |
27.94 |
| 2026-02-22 12:00 |
01:55:15.69 |
-56:01:39.7 |
HIP 8767 |
29.06 |
| 2026-02-23 00:00 |
01:55:19.62 |
-56:00:37.3 |
HIP 8767 |
30.19 |
| 2026-02-23 12:00 |
01:55:23.61 |
-55:59:35.1 |
HIP 8711 |
31.02 |
| 2026-02-24 00:00 |
01:55:27.65 |
-55:58:33.2 |
HIP 8711 |
31.09 |