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) |
| 2026-06-01 00:00 |
02:45:15.29 |
+14:28:34.2 |
HIP 12838 |
14.65 |
| 2026-06-01 12:00 |
02:45:17.91 |
+14:28:45.5 |
HIP 12838 |
14.98 |
| 2026-06-02 00:00 |
02:45:20.52 |
+14:28:56.9 |
HIP 12838 |
15.33 |
| 2026-06-02 12:00 |
02:45:23.12 |
+14:29:08.1 |
HIP 12838 |
15.70 |
| 2026-06-03 00:00 |
02:45:25.70 |
+14:29:19.3 |
HIP 12838 |
16.09 |
| 2026-06-03 12:00 |
02:45:28.28 |
+14:29:30.4 |
HIP 12838 |
16.49 |
| 2026-06-04 00:00 |
02:45:30.84 |
+14:29:41.5 |
HIP 12838 |
16.90 |
| 2026-06-04 12:00 |
02:45:33.39 |
+14:29:52.5 |
HIP 12838 |
17.33 |
| 2026-06-05 00:00 |
02:45:35.92 |
+14:30:03.4 |
HIP 12838 |
17.76 |
| 2026-06-05 12:00 |
02:45:38.45 |
+14:30:14.3 |
HIP 12838 |
18.21 |
| 2026-06-06 00:00 |
02:45:40.96 |
+14:30:25.1 |
HIP 12838 |
18.66 |
| 2026-06-06 12:00 |
02:45:43.45 |
+14:30:35.8 |
HIP 12838 |
19.12 |
| 2026-06-07 00:00 |
02:45:45.94 |
+14:30:46.5 |
HIP 12838 |
19.59 |
| 2026-06-07 12:00 |
02:45:48.41 |
+14:30:57.1 |
HIP 12838 |
20.07 |
| 2026-06-08 00:00 |
02:45:50.87 |
+14:31:07.6 |
HIP 12838 |
20.55 |
| 2026-06-08 12:00 |
02:45:53.31 |
+14:31:18.0 |
HIP 12838 |
21.03 |
| 2026-06-09 00:00 |
02:45:55.74 |
+14:31:28.4 |
HIP 12838 |
21.52 |
| 2026-06-09 12:00 |
02:45:58.16 |
+14:31:38.7 |
HIP 12838 |
22.01 |
| 2026-06-10 00:00 |
02:46:00.56 |
+14:31:48.9 |
HIP 12838 |
22.51 |
| 2026-06-10 12:00 |
02:46:02.95 |
+14:31:59.0 |
HIP 12838 |
23.00 |
| 2026-06-11 00:00 |
02:46:05.33 |
+14:32:09.1 |
HIP 12838 |
23.50 |
| 2026-06-11 12:00 |
02:46:07.68 |
+14:32:19.1 |
HIP 12838 |
24.00 |
| 2026-06-12 00:00 |
02:46:10.03 |
+14:32:29.0 |
HIP 12838 |
24.50 |
| 2026-06-12 12:00 |
02:46:12.36 |
+14:32:38.8 |
HIP 12838 |
25.00 |
| 2026-06-13 00:00 |
02:46:14.67 |
+14:32:48.6 |
HIP 12838 |
25.50 |
| 2026-06-13 12:00 |
02:46:16.97 |
+14:32:58.2 |
HIP 12838 |
26.00 |
| 2026-06-14 00:00 |
02:46:19.25 |
+14:33:07.8 |
HIP 12838 |
26.50 |
| 2026-06-14 12:00 |
02:46:21.52 |
+14:33:17.3 |
HIP 12838 |
27.00 |
| 2026-06-15 00:00 |
02:46:23.77 |
+14:33:26.7 |
HIP 12928 |
27.08 |
| 2026-06-15 12:00 |
02:46:26.00 |
+14:33:36.1 |
HIP 12928 |
26.97 |
| 2026-06-16 00:00 |
02:46:28.22 |
+14:33:45.3 |
HIP 12928 |
26.86 |
| 2026-06-16 12:00 |
02:46:30.42 |
+14:33:54.5 |
HIP 12928 |
26.77 |
| 2026-06-17 00:00 |
02:46:32.61 |
+14:34:03.6 |
HIP 12928 |
26.70 |
| 2026-06-17 12:00 |
02:46:34.77 |
+14:34:12.6 |
HIP 12928 |
26.63 |
| 2026-06-18 00:00 |
02:46:36.92 |
+14:34:21.5 |
HIP 12928 |
26.57 |
| 2026-06-18 12:00 |
02:46:39.06 |
+14:34:30.3 |
HIP 12928 |
26.53 |
| 2026-06-19 00:00 |
02:46:41.17 |
+14:34:39.1 |
HIP 12928 |
26.50 |
| 2026-06-19 12:00 |
02:46:43.27 |
+14:34:47.7 |
HIP 12928 |
26.48 |
| 2026-06-20 00:00 |
02:46:45.35 |
+14:34:56.3 |
HIP 12928 |
26.47 |
| 2026-06-20 12:00 |
02:46:47.41 |
+14:35:04.8 |
HIP 12928 |
26.47 |
| 2026-06-21 00:00 |
02:46:49.46 |
+14:35:13.1 |
HIP 12928 |
26.48 |
| 2026-06-21 12:00 |
02:46:51.48 |
+14:35:21.4 |
HIP 12928 |
26.50 |
| 2026-06-22 00:00 |
02:46:53.49 |
+14:35:29.6 |
HIP 12928 |
26.53 |