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
$$
M_a = (11.207 + 3.193\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.207 |
| n |
3.193 |
| 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 |
2007-11-01 |
+6.9416 |
-5.422 |
| 2007-11-01 |
2008-03-31 |
+15.1159 |
-11.353 |
| 2008-03-31 |
2008-08-20 |
-8.4186 |
+3.052 |
| 2008-08-20 |
2008-10-02 |
+13.2417 |
-5.726 |
| 2008-10-02 |
2009-01-10 |
+4.8132 |
-3.658 |
| 2009-01-10 |
2009-02-28 |
+40.2005 |
-6.492 |
| 2009-02-28 |
2011-01-01 |
+3.0849 |
-1.522 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
02:48:22.65 |
+14:40:51.0 |
HIP 13122 |
7.09 |
| 2026-07-29 12:00 |
02:48:22.95 |
+14:40:51.1 |
HIP 13122 |
7.03 |
| 2026-07-30 00:00 |
02:48:23.23 |
+14:40:51.1 |
HIP 13122 |
6.98 |
| 2026-07-30 12:00 |
02:48:23.47 |
+14:40:51.0 |
HIP 13122 |
6.93 |
| 2026-07-31 00:00 |
02:48:23.70 |
+14:40:50.8 |
HIP 13122 |
6.88 |
| 2026-07-31 12:00 |
02:48:23.89 |
+14:40:50.4 |
HIP 13122 |
6.84 |
| 2026-08-01 00:00 |
02:48:24.07 |
+14:40:49.9 |
HIP 13122 |
6.80 |
| 2026-08-01 12:00 |
02:48:24.21 |
+14:40:49.4 |
HIP 13122 |
6.77 |
| 2026-08-02 00:00 |
02:48:24.33 |
+14:40:48.7 |
HIP 13122 |
6.74 |
| 2026-08-02 12:00 |
02:48:24.42 |
+14:40:47.8 |
HIP 13122 |
6.71 |
| 2026-08-03 00:00 |
02:48:24.49 |
+14:40:46.9 |
HIP 13122 |
6.69 |
| 2026-08-03 12:00 |
02:48:24.53 |
+14:40:45.8 |
HIP 13122 |
6.67 |
| 2026-08-04 00:00 |
02:48:24.54 |
+14:40:44.7 |
HIP 13122 |
6.66 |
| 2026-08-04 12:00 |
02:48:24.53 |
+14:40:43.4 |
HIP 13122 |
6.65 |
| 2026-08-05 00:00 |
02:48:24.49 |
+14:40:41.9 |
HIP 13122 |
6.64 |
| 2026-08-05 12:00 |
02:48:24.42 |
+14:40:40.4 |
HIP 13122 |
6.64 |
| 2026-08-06 00:00 |
02:48:24.33 |
+14:40:38.7 |
HIP 13122 |
6.64 |
| 2026-08-06 12:00 |
02:48:24.21 |
+14:40:37.0 |
HIP 13122 |
6.65 |
| 2026-08-07 00:00 |
02:48:24.06 |
+14:40:35.1 |
HIP 13122 |
6.66 |
| 2026-08-07 12:00 |
02:48:23.89 |
+14:40:33.0 |
HIP 13122 |
6.68 |
| 2026-08-08 00:00 |
02:48:23.69 |
+14:40:30.9 |
HIP 13122 |
6.70 |
| 2026-08-08 12:00 |
02:48:23.46 |
+14:40:28.6 |
HIP 13122 |
6.72 |
| 2026-08-09 00:00 |
02:48:23.21 |
+14:40:26.2 |
HIP 13122 |
6.75 |
| 2026-08-09 12:00 |
02:48:22.93 |
+14:40:23.7 |
HIP 13122 |
6.79 |
| 2026-08-10 00:00 |
02:48:22.62 |
+14:40:21.1 |
HIP 13122 |
6.83 |
| 2026-08-10 12:00 |
02:48:22.29 |
+14:40:18.4 |
HIP 13122 |
6.87 |
| 2026-08-11 00:00 |
02:48:21.93 |
+14:40:15.5 |
HIP 13122 |
6.92 |
| 2026-08-11 12:00 |
02:48:21.54 |
+14:40:12.5 |
HIP 13122 |
6.98 |
| 2026-08-12 00:00 |
02:48:21.13 |
+14:40:09.4 |
HIP 13122 |
7.04 |
| 2026-08-12 12:00 |
02:48:20.68 |
+14:40:06.2 |
HIP 13122 |
7.11 |
| 2026-08-13 00:00 |
02:48:20.22 |
+14:40:02.8 |
HIP 13122 |
7.19 |
| 2026-08-13 12:00 |
02:48:19.72 |
+14:39:59.4 |
HIP 13122 |
7.27 |
| 2026-08-14 00:00 |
02:48:19.20 |
+14:39:55.8 |
HIP 13122 |
7.36 |
| 2026-08-14 12:00 |
02:48:18.65 |
+14:39:52.1 |
HIP 13122 |
7.45 |
| 2026-08-15 00:00 |
02:48:18.07 |
+14:39:48.2 |
HIP 13122 |
7.56 |
| 2026-08-15 12:00 |
02:48:17.47 |
+14:39:44.3 |
HIP 13122 |
7.67 |
| 2026-08-16 00:00 |
02:48:16.84 |
+14:39:40.2 |
HIP 13122 |
7.78 |
| 2026-08-16 12:00 |
02:48:16.18 |
+14:39:36.0 |
HIP 13122 |
7.90 |
| 2026-08-17 00:00 |
02:48:15.50 |
+14:39:31.7 |
HIP 13122 |
8.03 |
| 2026-08-17 12:00 |
02:48:14.79 |
+14:39:27.3 |
HIP 13122 |
8.17 |
| 2026-08-18 00:00 |
02:48:14.05 |
+14:39:22.8 |
HIP 13122 |
8.32 |
| 2026-08-18 12:00 |
02:48:13.29 |
+14:39:18.1 |
HIP 13122 |
8.47 |
| 2026-08-19 00:00 |
02:48:12.50 |
+14:39:13.3 |
HIP 13122 |
8.63 |