C/2007 N3 (Lulin)
메타데이터
| 항목 |
값 |
| Designation |
C/2007 N3 (Lulin) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-01-10T15:21:20.111040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:10Z |
| Obs used |
3853 |
| NEO |
- |
| M1 |
10.200 |
| K1 |
6.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-12-05.0000000 |
| e |
0.99998362 |
| q (au) |
1.212259 |
| a (au) |
74017.562220 |
| i (deg) |
178.373611 |
| Ω (om, deg) |
338.535163 |
| ω (w, deg) |
136.862191 |
| M (ma, deg) |
359.999998 |
밝기
산란 + 전체 선형
$$
M_a = (11.207 + 3.192\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.207 |
| n |
3.192 |
| gf |
1.000 |
| gb |
-0.711 |
| 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 |
| 2007-07-11 |
2008-01-02 |
+8.3068 |
-6.482 |
| 2008-01-02 |
2008-03-31 |
+17.2126 |
-12.575 |
| 2008-03-31 |
2008-08-20 |
-8.3329 |
+3.016 |
| 2008-08-20 |
2008-10-02 |
+13.2123 |
-5.717 |
| 2008-10-02 |
2009-01-10 |
+4.8179 |
-3.659 |
| 2009-01-10 |
2009-02-28 |
+40.2094 |
-6.494 |
| 2009-02-28 |
2011-01-01 |
+3.0875 |
-1.522 |
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 |
02:36:51.07 |
+13:47:22.5 |
HIP 12137 |
10.54 |
| 2026-02-03 12:00 |
02:36:51.06 |
+13:47:23.9 |
HIP 12137 |
10.55 |
| 2026-02-04 00:00 |
02:36:51.08 |
+13:47:25.3 |
HIP 12137 |
10.57 |
| 2026-02-04 12:00 |
02:36:51.13 |
+13:47:26.9 |
HIP 12137 |
10.60 |
| 2026-02-05 00:00 |
02:36:51.20 |
+13:47:28.6 |
HIP 12137 |
10.63 |
| 2026-02-05 12:00 |
02:36:51.30 |
+13:47:30.4 |
HIP 12137 |
10.67 |
| 2026-02-06 00:00 |
02:36:51.43 |
+13:47:32.4 |
HIP 12137 |
10.72 |
| 2026-02-06 12:00 |
02:36:51.59 |
+13:47:34.5 |
HIP 12137 |
10.77 |
| 2026-02-07 00:00 |
02:36:51.78 |
+13:47:36.8 |
HIP 12137 |
10.83 |
| 2026-02-07 12:00 |
02:36:51.99 |
+13:47:39.1 |
HIP 12137 |
10.89 |
| 2026-02-08 00:00 |
02:36:52.24 |
+13:47:41.6 |
HIP 12137 |
10.96 |
| 2026-02-08 12:00 |
02:36:52.51 |
+13:47:44.2 |
HIP 12137 |
11.04 |
| 2026-02-09 00:00 |
02:36:52.81 |
+13:47:47.0 |
HIP 12137 |
11.12 |
| 2026-02-09 12:00 |
02:36:53.13 |
+13:47:49.9 |
HIP 12137 |
11.21 |
| 2026-02-10 00:00 |
02:36:53.49 |
+13:47:52.9 |
HIP 12137 |
11.31 |
| 2026-02-10 12:00 |
02:36:53.87 |
+13:47:56.0 |
HIP 12137 |
11.42 |
| 2026-02-11 00:00 |
02:36:54.28 |
+13:47:59.3 |
HIP 12137 |
11.53 |
| 2026-02-11 12:00 |
02:36:54.72 |
+13:48:02.7 |
HIP 12137 |
11.64 |
| 2026-02-12 00:00 |
02:36:55.18 |
+13:48:06.2 |
HIP 12137 |
11.76 |
| 2026-02-12 12:00 |
02:36:55.68 |
+13:48:09.9 |
HIP 12137 |
11.89 |
| 2026-02-13 00:00 |
02:36:56.20 |
+13:48:13.6 |
HIP 12137 |
12.03 |
| 2026-02-13 12:00 |
02:36:56.74 |
+13:48:17.5 |
HIP 12137 |
12.17 |
| 2026-02-14 00:00 |
02:36:57.32 |
+13:48:21.6 |
HIP 12137 |
12.32 |
| 2026-02-14 12:00 |
02:36:57.92 |
+13:48:25.7 |
HIP 12137 |
12.47 |
| 2026-02-15 00:00 |
02:36:58.55 |
+13:48:30.0 |
HIP 12137 |
12.64 |
| 2026-02-15 12:00 |
02:36:59.21 |
+13:48:34.4 |
HIP 12137 |
12.80 |
| 2026-02-16 00:00 |
02:36:59.89 |
+13:48:38.9 |
HIP 12137 |
12.98 |
| 2026-02-16 12:00 |
02:37:00.60 |
+13:48:43.6 |
HIP 12137 |
13.16 |
| 2026-02-17 00:00 |
02:37:01.34 |
+13:48:48.4 |
HIP 12137 |
13.35 |
| 2026-02-17 12:00 |
02:37:02.10 |
+13:48:53.2 |
HIP 12137 |
13.54 |
| 2026-02-18 00:00 |
02:37:02.89 |
+13:48:58.3 |
HIP 12137 |
13.74 |
| 2026-02-18 12:00 |
02:37:03.71 |
+13:49:03.4 |
HIP 12137 |
13.95 |
| 2026-02-19 00:00 |
02:37:04.55 |
+13:49:08.6 |
HIP 12137 |
14.16 |
| 2026-02-19 12:00 |
02:37:05.42 |
+13:49:14.0 |
HIP 12137 |
14.38 |
| 2026-02-20 00:00 |
02:37:06.31 |
+13:49:19.5 |
HIP 12137 |
14.61 |
| 2026-02-20 12:00 |
02:37:07.24 |
+13:49:25.1 |
HIP 12137 |
14.84 |
| 2026-02-21 00:00 |
02:37:08.18 |
+13:49:30.9 |
HIP 12137 |
15.08 |
| 2026-02-21 12:00 |
02:37:09.16 |
+13:49:36.7 |
HIP 12137 |
15.33 |
| 2026-02-22 00:00 |
02:37:10.16 |
+13:49:42.7 |
HIP 12137 |
15.58 |
| 2026-02-22 12:00 |
02:37:11.18 |
+13:49:48.7 |
HIP 12137 |
15.84 |
| 2026-02-23 00:00 |
02:37:12.23 |
+13:49:54.9 |
HIP 12137 |
16.10 |
| 2026-02-23 12:00 |
02:37:13.31 |
+13:50:01.2 |
HIP 12137 |
16.37 |
| 2026-02-24 00:00 |
02:37:14.41 |
+13:50:07.6 |
HIP 12137 |
16.65 |