메타데이터
| 항목 |
값 |
| Designation |
C/2012 L1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-12-25T09:55:40.889280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:10Z |
| Obs used |
1489 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
8.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-11-20.0000000 |
| e |
0.99705290 |
| q (au) |
2.262410 |
| a (au) |
767.674452 |
| i (deg) |
87.219166 |
| Ω (om, deg) |
271.766875 |
| ω (w, deg) |
140.289327 |
| M (ma, deg) |
359.998359 |
밝기
산란 + 전체 선형
$$
M_a = (12.971 + 4.294\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.971 |
| n |
4.294 |
| gf |
1.000 |
| gb |
-0.847 |
| 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 |
| 2012-06-01 |
2012-09-11 |
+7.1051 |
-3.451 |
| 2012-09-11 |
2012-12-24 |
-1.1140 |
-0.355 |
| 2012-12-26 |
2013-07-08 |
+4.6516 |
-1.625 |
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 |
06:46:38.82 |
-83:07:41.7 |
HIP 32351 |
14.20 |
| 2026-06-01 12:00 |
06:47:07.91 |
-83:07:15.7 |
HIP 32351 |
13.98 |
| 2026-06-02 00:00 |
06:47:37.07 |
-83:06:50.1 |
HIP 32351 |
13.83 |
| 2026-06-02 12:00 |
06:48:06.31 |
-83:06:24.7 |
HIP 32351 |
13.75 |
| 2026-06-03 00:00 |
06:48:35.63 |
-83:05:59.7 |
HIP 32351 |
13.75 |
| 2026-06-03 12:00 |
06:49:05.03 |
-83:05:35.0 |
HIP 32351 |
13.83 |
| 2026-06-04 00:00 |
06:49:34.50 |
-83:05:10.5 |
HIP 32351 |
13.99 |
| 2026-06-04 12:00 |
06:50:04.04 |
-83:04:46.4 |
HIP 32351 |
14.21 |
| 2026-06-05 00:00 |
06:50:33.65 |
-83:04:22.6 |
HIP 32351 |
14.51 |
| 2026-06-05 12:00 |
06:51:03.33 |
-83:03:59.1 |
HIP 32351 |
14.87 |
| 2026-06-06 00:00 |
06:51:33.09 |
-83:03:35.9 |
HIP 32351 |
15.30 |
| 2026-06-06 12:00 |
06:52:02.91 |
-83:03:13.1 |
HIP 32351 |
15.78 |
| 2026-06-07 00:00 |
06:52:32.80 |
-83:02:50.5 |
HIP 32351 |
16.31 |
| 2026-06-07 12:00 |
06:53:02.76 |
-83:02:28.3 |
HIP 32351 |
16.89 |
| 2026-06-08 00:00 |
06:53:32.78 |
-83:02:06.4 |
HIP 32351 |
17.52 |
| 2026-06-08 12:00 |
06:54:02.87 |
-83:01:44.8 |
HIP 32351 |
18.17 |
| 2026-06-09 00:00 |
06:54:33.03 |
-83:01:23.5 |
HIP 32351 |
18.87 |
| 2026-06-09 12:00 |
06:55:03.24 |
-83:01:02.6 |
HIP 32351 |
19.59 |
| 2026-06-10 00:00 |
06:55:33.52 |
-83:00:41.9 |
HIP 32351 |
20.34 |
| 2026-06-10 12:00 |
06:56:03.86 |
-83:00:21.6 |
HIP 32351 |
21.12 |
| 2026-06-11 00:00 |
06:56:34.26 |
-83:00:01.6 |
HIP 32351 |
21.92 |
| 2026-06-11 12:00 |
06:57:04.72 |
-82:59:41.9 |
HIP 32351 |
22.74 |
| 2026-06-12 00:00 |
06:57:35.24 |
-82:59:22.6 |
HIP 32351 |
23.57 |
| 2026-06-12 12:00 |
06:58:05.81 |
-82:59:03.6 |
HIP 32351 |
24.42 |
| 2026-06-13 00:00 |
06:58:36.44 |
-82:58:44.9 |
HIP 32351 |
25.29 |
| 2026-06-13 12:00 |
06:59:07.12 |
-82:58:26.5 |
HIP 32351 |
26.16 |
| 2026-06-14 00:00 |
06:59:37.86 |
-82:58:08.5 |
HIP 32351 |
27.05 |
| 2026-06-14 12:00 |
07:00:08.65 |
-82:57:50.7 |
HIP 32351 |
27.95 |
| 2026-06-15 00:00 |
07:00:39.49 |
-82:57:33.4 |
HIP 32351 |
28.86 |
| 2026-06-15 12:00 |
07:01:10.38 |
-82:57:16.3 |
HIP 32351 |
29.78 |
| 2026-06-16 00:00 |
07:01:41.32 |
-82:56:59.6 |
HIP 32351 |
30.70 |
| 2026-06-16 12:00 |
07:02:12.31 |
-82:56:43.2 |
HIP 32351 |
31.63 |
| 2026-06-17 00:00 |
07:02:43.34 |
-82:56:27.1 |
HIP 32351 |
32.57 |
| 2026-06-17 12:00 |
07:03:14.42 |
-82:56:11.4 |
HIP 32351 |
33.52 |
| 2026-06-18 00:00 |
07:03:45.55 |
-82:55:56.0 |
HIP 32351 |
34.46 |
| 2026-06-18 12:00 |
07:04:16.71 |
-82:55:41.0 |
HIP 32351 |
35.42 |
| 2026-06-19 00:00 |
07:04:47.92 |
-82:55:26.2 |
HIP 32351 |
36.38 |
| 2026-06-19 12:00 |
07:05:19.17 |
-82:55:11.9 |
HIP 32351 |
37.34 |
| 2026-06-20 00:00 |
07:05:50.45 |
-82:54:57.8 |
HIP 32351 |
38.31 |
| 2026-06-20 12:00 |
07:06:21.78 |
-82:54:44.1 |
HIP 32351 |
39.28 |
| 2026-06-21 00:00 |
07:06:53.14 |
-82:54:30.7 |
HIP 32351 |
40.25 |
| 2026-06-21 12:00 |
07:07:24.54 |
-82:54:17.7 |
HIP 32351 |
41.23 |
| 2026-06-22 00:00 |
07:07:55.98 |
-82:54:04.9 |
HIP 32351 |
42.20 |