메타데이터
| 항목 |
값 |
| Designation |
C/2011 W3 (Lovejoy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-12-16T00:17:00.297600Z |
| Orbit solution date (soln_date, UTC) |
2012-06-04T12:31:54Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
15.300 |
| K1 |
9.300 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-12-06.0000000 |
| e |
0.99992942 |
| q (au) |
0.005554 |
| a (au) |
78.682940 |
| i (deg) |
134.355811 |
| Ω (om, deg) |
326.369147 |
| ω (w, deg) |
53.509212 |
| M (ma, deg) |
359.985862 |
밝기
산란 + 전체 선형
$$
M_a = (15.974 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.974 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
| 2011-11-27 |
2011-12-13 |
+6.4650 |
+3.679 |
| 2011-12-13 |
2011-12-15 |
-5.1086 |
-3.970 |
| 2011-12-16 |
2011-12-21 |
-9.5415 |
-11.600 |
| 2011-12-21 |
2012-01-31 |
+3.0683 |
-4.819 |
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 |
06:44:19.60 |
-10:34:41.4 |
HIP 32255 |
25.41 |
| 2026-06-01 12:00 |
06:44:22.74 |
-10:34:29.6 |
HIP 32255 |
25.69 |
| 2026-06-02 00:00 |
06:44:25.90 |
-10:34:18.1 |
HIP 32255 |
25.99 |
| 2026-06-02 12:00 |
06:44:29.07 |
-10:34:06.7 |
HIP 32255 |
26.31 |
| 2026-06-03 00:00 |
06:44:32.25 |
-10:33:55.6 |
HIP 32255 |
26.65 |
| 2026-06-03 12:00 |
06:44:35.45 |
-10:33:44.8 |
HIP 32255 |
27.00 |
| 2026-06-04 00:00 |
06:44:38.66 |
-10:33:34.2 |
HIP 32255 |
27.37 |
| 2026-06-04 12:00 |
06:44:41.88 |
-10:33:23.8 |
HIP 32255 |
27.75 |
| 2026-06-05 00:00 |
06:44:45.12 |
-10:33:13.7 |
HIP 32255 |
28.15 |
| 2026-06-05 12:00 |
06:44:48.37 |
-10:33:03.8 |
HIP 32255 |
28.57 |
| 2026-06-06 00:00 |
06:44:51.63 |
-10:32:54.1 |
HIP 32255 |
29.00 |
| 2026-06-06 12:00 |
06:44:54.90 |
-10:32:44.7 |
HIP 32255 |
29.44 |
| 2026-06-07 00:00 |
06:44:58.19 |
-10:32:35.5 |
HIP 32255 |
29.90 |
| 2026-06-07 12:00 |
06:45:01.48 |
-10:32:26.6 |
HIP 32255 |
30.37 |
| 2026-06-08 00:00 |
06:45:04.79 |
-10:32:17.9 |
HIP 32255 |
30.85 |
| 2026-06-08 12:00 |
06:45:08.11 |
-10:32:09.4 |
HIP 32255 |
31.34 |
| 2026-06-09 00:00 |
06:45:11.44 |
-10:32:01.2 |
HIP 32255 |
31.85 |
| 2026-06-09 12:00 |
06:45:14.79 |
-10:31:53.3 |
HIP 32255 |
32.37 |
| 2026-06-10 00:00 |
06:45:18.14 |
-10:31:45.5 |
HIP 32474 |
32.20 |
| 2026-06-10 12:00 |
06:45:21.50 |
-10:31:38.1 |
HIP 32474 |
31.59 |
| 2026-06-11 00:00 |
06:45:24.87 |
-10:31:30.8 |
HIP 32474 |
31.00 |
| 2026-06-11 12:00 |
06:45:28.26 |
-10:31:23.8 |
HIP 32474 |
30.43 |
| 2026-06-12 00:00 |
06:45:31.65 |
-10:31:17.1 |
HIP 32474 |
29.86 |
| 2026-06-12 12:00 |
06:45:35.05 |
-10:31:10.6 |
HIP 32474 |
29.32 |
| 2026-06-13 00:00 |
06:45:38.46 |
-10:31:04.4 |
HIP 32474 |
28.78 |
| 2026-06-13 12:00 |
06:45:41.88 |
-10:30:58.4 |
HIP 32474 |
28.27 |
| 2026-06-14 00:00 |
06:45:45.31 |
-10:30:52.6 |
HIP 32474 |
27.78 |
| 2026-06-14 12:00 |
06:45:48.75 |
-10:30:47.1 |
HIP 32474 |
27.30 |
| 2026-06-15 00:00 |
06:45:52.20 |
-10:30:41.8 |
HIP 32474 |
26.85 |
| 2026-06-15 12:00 |
06:45:55.65 |
-10:30:36.8 |
HIP 32474 |
26.42 |
| 2026-06-16 00:00 |
06:45:59.12 |
-10:30:32.1 |
HIP 32474 |
26.02 |
| 2026-06-16 12:00 |
06:46:02.58 |
-10:30:27.6 |
HIP 32474 |
25.64 |
| 2026-06-17 00:00 |
06:46:06.06 |
-10:30:23.3 |
HIP 32474 |
25.28 |
| 2026-06-17 12:00 |
06:46:09.55 |
-10:30:19.3 |
HIP 32474 |
24.96 |
| 2026-06-18 00:00 |
06:46:13.04 |
-10:30:15.5 |
HIP 32474 |
24.66 |
| 2026-06-18 12:00 |
06:46:16.53 |
-10:30:12.0 |
HIP 32474 |
24.39 |
| 2026-06-19 00:00 |
06:46:20.04 |
-10:30:08.8 |
HIP 32474 |
24.16 |
| 2026-06-19 12:00 |
06:46:23.55 |
-10:30:05.8 |
HIP 32474 |
23.96 |
| 2026-06-20 00:00 |
06:46:27.06 |
-10:30:03.0 |
HIP 32474 |
23.79 |
| 2026-06-20 12:00 |
06:46:30.58 |
-10:30:00.5 |
HIP 32474 |
23.66 |
| 2026-06-21 00:00 |
06:46:34.11 |
-10:29:58.2 |
HIP 32474 |
23.56 |
| 2026-06-21 12:00 |
06:46:37.64 |
-10:29:56.2 |
HIP 32474 |
23.50 |
| 2026-06-22 00:00 |
06:46:41.18 |
-10:29:54.4 |
HIP 32474 |
23.47 |