메타데이터
| 항목 |
값 |
| Designation |
C/2012 L3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-06-12T05:16:49.045440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:16Z |
| Obs used |
255 |
| NEO |
- |
| M1 |
8.900 |
| K1 |
15.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-07-18.0000000 |
| e |
0.99079164 |
| q (au) |
3.045029 |
| a (au) |
330.681042 |
| i (deg) |
134.196647 |
| Ω (om, deg) |
53.489782 |
| ω (w, deg) |
107.093418 |
| M (ma, deg) |
0.005864 |
밝기
산란 + 전체 선형
$$
M_a = (10.623 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.623 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.692 |
| 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 |
| 2012-06-12 |
2013-05-08 |
+8.7931 |
-4.384 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
10:00:51.97 |
-34:36:15.8 |
HIP 49089 |
4.05 |
| 2026-05-12 12:00 |
10:00:50.99 |
-34:35:29.4 |
HIP 49089 |
4.57 |
| 2026-05-13 00:00 |
10:00:50.05 |
-34:34:43.1 |
HIP 49089 |
5.16 |
| 2026-05-13 12:00 |
10:00:49.16 |
-34:33:56.8 |
HIP 49089 |
5.79 |
| 2026-05-14 00:00 |
10:00:48.30 |
-34:33:10.7 |
HIP 49089 |
6.45 |
| 2026-05-14 12:00 |
10:00:47.48 |
-34:32:24.7 |
HIP 49089 |
7.13 |
| 2026-05-15 00:00 |
10:00:46.70 |
-34:31:38.8 |
HIP 49089 |
7.83 |
| 2026-05-15 12:00 |
10:00:45.96 |
-34:30:53.0 |
HIP 49089 |
8.53 |
| 2026-05-16 00:00 |
10:00:45.26 |
-34:30:07.4 |
HIP 49089 |
9.24 |
| 2026-05-16 12:00 |
10:00:44.60 |
-34:29:21.8 |
HIP 49089 |
9.95 |
| 2026-05-17 00:00 |
10:00:43.98 |
-34:28:36.4 |
HIP 49089 |
10.66 |
| 2026-05-17 12:00 |
10:00:43.40 |
-34:27:51.1 |
HIP 49089 |
11.38 |
| 2026-05-18 00:00 |
10:00:42.85 |
-34:27:06.0 |
HIP 49089 |
12.09 |
| 2026-05-18 12:00 |
10:00:42.35 |
-34:26:21.0 |
HIP 49089 |
12.81 |
| 2026-05-19 00:00 |
10:00:41.89 |
-34:25:36.1 |
HIP 49089 |
13.52 |
| 2026-05-19 12:00 |
10:00:41.47 |
-34:24:51.4 |
HIP 49089 |
14.24 |
| 2026-05-20 00:00 |
10:00:41.08 |
-34:24:06.9 |
HIP 49089 |
14.95 |
| 2026-05-20 12:00 |
10:00:40.74 |
-34:23:22.5 |
HIP 49089 |
15.66 |
| 2026-05-21 00:00 |
10:00:40.43 |
-34:22:38.2 |
HIP 49089 |
16.36 |
| 2026-05-21 12:00 |
10:00:40.17 |
-34:21:54.1 |
HIP 49089 |
17.07 |
| 2026-05-22 00:00 |
10:00:39.94 |
-34:21:10.2 |
HIP 49089 |
17.77 |
| 2026-05-22 12:00 |
10:00:39.75 |
-34:20:26.4 |
HIP 49089 |
18.46 |
| 2026-05-23 00:00 |
10:00:39.60 |
-34:19:42.8 |
HIP 49165 |
19.12 |
| 2026-05-23 12:00 |
10:00:39.49 |
-34:18:59.3 |
HIP 49165 |
18.80 |
| 2026-05-24 00:00 |
10:00:39.42 |
-34:18:16.1 |
HIP 49165 |
18.50 |
| 2026-05-24 12:00 |
10:00:39.38 |
-34:17:33.0 |
HIP 49165 |
18.21 |
| 2026-05-25 00:00 |
10:00:39.38 |
-34:16:50.1 |
HIP 49165 |
17.95 |
| 2026-05-25 12:00 |
10:00:39.43 |
-34:16:07.3 |
HIP 49165 |
17.70 |
| 2026-05-26 00:00 |
10:00:39.51 |
-34:15:24.8 |
HIP 49165 |
17.47 |
| 2026-05-26 12:00 |
10:00:39.63 |
-34:14:42.4 |
HIP 49165 |
17.26 |
| 2026-05-27 00:00 |
10:00:39.78 |
-34:14:00.3 |
HIP 49165 |
17.06 |
| 2026-05-27 12:00 |
10:00:39.98 |
-34:13:18.3 |
HIP 49165 |
16.89 |
| 2026-05-28 00:00 |
10:00:40.21 |
-34:12:36.5 |
HIP 49165 |
16.74 |
| 2026-05-28 12:00 |
10:00:40.48 |
-34:11:54.9 |
HIP 49165 |
16.61 |
| 2026-05-29 00:00 |
10:00:40.78 |
-34:11:13.5 |
HIP 49165 |
16.50 |
| 2026-05-29 12:00 |
10:00:41.13 |
-34:10:32.3 |
HIP 49165 |
16.41 |
| 2026-05-30 00:00 |
10:00:41.51 |
-34:09:51.3 |
HIP 49165 |
16.34 |
| 2026-05-30 12:00 |
10:00:41.93 |
-34:09:10.5 |
HIP 49165 |
16.29 |
| 2026-05-31 00:00 |
10:00:42.38 |
-34:08:30.0 |
HIP 49165 |
16.27 |
| 2026-05-31 12:00 |
10:00:42.87 |
-34:07:49.6 |
HIP 49165 |
16.26 |
| 2026-06-01 00:00 |
10:00:43.40 |
-34:07:09.4 |
HIP 49165 |
16.27 |
| 2026-06-01 12:00 |
10:00:43.97 |
-34:06:29.5 |
HIP 49165 |
16.31 |
| 2026-06-02 00:00 |
10:00:44.57 |
-34:05:49.8 |
HIP 49165 |
16.36 |