메타데이터
| 항목 |
값 |
| Designation |
C/2007 M3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-09-04T15:02:43.900800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:10Z |
| Obs used |
680 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
8.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-08-18.0000000 |
| e |
0.97975971 |
| q (au) |
3.468759 |
| a (au) |
171.378889 |
| i (deg) |
161.760899 |
| Ω (om, deg) |
41.620749 |
| ω (w, deg) |
125.739479 |
| M (ma, deg) |
359.992256 |
밝기
산란 + 전체 선형
$$
M_a = (5.660 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.660 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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 |
| 2006-11-12 |
2007-09-03 |
+12.7086 |
-6.767 |
| 2007-09-06 |
2008-07-01 |
+1.6882 |
-1.461 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
08:36:03.09 |
+00:08:02.4 |
HIP 42119 |
19.20 |
| 2026-09-20 12:00 |
08:36:04.79 |
+00:07:44.2 |
HIP 42119 |
19.72 |
| 2026-09-21 00:00 |
08:36:06.48 |
+00:07:26.0 |
HIP 42119 |
20.23 |
| 2026-09-21 12:00 |
08:36:08.15 |
+00:07:07.8 |
HIP 42119 |
20.74 |
| 2026-09-22 00:00 |
08:36:09.80 |
+00:06:49.6 |
HIP 42119 |
21.25 |
| 2026-09-22 12:00 |
08:36:11.43 |
+00:06:31.4 |
HIP 42119 |
21.75 |
| 2026-09-23 00:00 |
08:36:13.04 |
+00:06:13.2 |
HIP 42119 |
22.25 |
| 2026-09-23 12:00 |
08:36:14.62 |
+00:05:55.0 |
HIP 42119 |
22.75 |
| 2026-09-24 00:00 |
08:36:16.19 |
+00:05:36.8 |
HIP 42119 |
23.24 |
| 2026-09-24 12:00 |
08:36:17.73 |
+00:05:18.5 |
HIP 42119 |
23.73 |
| 2026-09-25 00:00 |
08:36:19.25 |
+00:05:00.3 |
HIP 42119 |
24.21 |
| 2026-09-25 12:00 |
08:36:20.75 |
+00:04:42.1 |
HIP 42119 |
24.69 |
| 2026-09-26 00:00 |
08:36:22.23 |
+00:04:23.9 |
HIP 42119 |
25.17 |
| 2026-09-26 12:00 |
08:36:23.69 |
+00:04:05.7 |
HIP 42119 |
25.64 |
| 2026-09-27 00:00 |
08:36:25.12 |
+00:03:47.5 |
HIP 42119 |
26.11 |
| 2026-09-27 12:00 |
08:36:26.54 |
+00:03:29.2 |
HIP 42119 |
26.58 |
| 2026-09-28 00:00 |
08:36:27.93 |
+00:03:11.0 |
HIP 42119 |
27.04 |
| 2026-09-28 12:00 |
08:36:29.30 |
+00:02:52.9 |
HIP 42119 |
27.50 |
| 2026-09-29 00:00 |
08:36:30.65 |
+00:02:34.7 |
HIP 42119 |
27.95 |
| 2026-09-29 12:00 |
08:36:31.97 |
+00:02:16.5 |
HIP 42119 |
28.40 |
| 2026-09-30 00:00 |
08:36:33.27 |
+00:01:58.3 |
HIP 42119 |
28.84 |
| 2026-09-30 12:00 |
08:36:34.55 |
+00:01:40.2 |
HIP 42119 |
29.28 |
| 2026-10-01 00:00 |
08:36:35.81 |
+00:01:22.1 |
HIP 42119 |
29.72 |
| 2026-10-01 12:00 |
08:36:37.04 |
+00:01:03.9 |
HIP 42119 |
30.15 |
| 2026-10-02 00:00 |
08:36:38.25 |
+00:00:45.8 |
HIP 42119 |
30.58 |
| 2026-10-02 12:00 |
08:36:39.44 |
+00:00:27.8 |
HIP 42119 |
31.00 |
| 2026-10-03 00:00 |
08:36:40.60 |
+00:00:09.7 |
HIP 42119 |
31.42 |
| 2026-10-03 12:00 |
08:36:41.74 |
-00:00:08.4 |
HIP 42175 |
31.33 |
| 2026-10-04 00:00 |
08:36:42.86 |
-00:00:26.4 |
HIP 42175 |
31.16 |
| 2026-10-04 12:00 |
08:36:43.95 |
-00:00:44.4 |
HIP 42175 |
31.00 |
| 2026-10-05 00:00 |
08:36:45.02 |
-00:01:02.3 |
HIP 42175 |
30.85 |
| 2026-10-05 12:00 |
08:36:46.07 |
-00:01:20.3 |
HIP 42175 |
30.69 |
| 2026-10-06 00:00 |
08:36:47.09 |
-00:01:38.2 |
HIP 42175 |
30.54 |
| 2026-10-06 12:00 |
08:36:48.08 |
-00:01:56.1 |
HIP 42175 |
30.39 |
| 2026-10-07 00:00 |
08:36:49.06 |
-00:02:13.9 |
HIP 42175 |
30.24 |
| 2026-10-07 12:00 |
08:36:50.00 |
-00:02:31.8 |
HIP 42175 |
30.10 |
| 2026-10-08 00:00 |
08:36:50.93 |
-00:02:49.6 |
HIP 42175 |
29.95 |
| 2026-10-08 12:00 |
08:36:51.82 |
-00:03:07.3 |
HIP 42175 |
29.81 |
| 2026-10-09 00:00 |
08:36:52.70 |
-00:03:25.0 |
HIP 42175 |
29.66 |
| 2026-10-09 12:00 |
08:36:53.54 |
-00:03:42.7 |
HIP 42175 |
29.52 |
| 2026-10-10 00:00 |
08:36:54.37 |
-00:04:00.3 |
HIP 42175 |
29.38 |
| 2026-10-10 12:00 |
08:36:55.17 |
-00:04:17.9 |
HIP 42175 |
29.24 |
| 2026-10-11 00:00 |
08:36:55.94 |
-00:04:35.5 |
HIP 42175 |
29.10 |