메타데이터
| 항목 |
값 |
| Designation |
C/2007 D1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-06-18T20:48:33.595200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:04Z |
| Obs used |
525 |
| NEO |
- |
| M1 |
8.900 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-06-26.0000000 |
| e |
0.99994869 |
| q (au) |
8.793366 |
| a (au) |
171366.674364 |
| i (deg) |
41.507013 |
| Ω (om, deg) |
171.084868 |
| ω (w, deg) |
340.143581 |
| M (ma, deg) |
0.000005 |
밝기
산란 + 전체 선형
$$
M_a = (10.943 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.943 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.666 |
| k |
0.800 |
| δ90 |
8.896 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
18:11:36.84 |
+18:26:24.2 |
HIP 89141 |
7.00 |
| 2026-05-12 12:00 |
18:11:34.51 |
+18:26:46.8 |
HIP 89141 |
7.34 |
| 2026-05-13 00:00 |
18:11:32.15 |
+18:27:09.1 |
HIP 89141 |
7.72 |
| 2026-05-13 12:00 |
18:11:29.76 |
+18:27:31.2 |
HIP 89141 |
8.13 |
| 2026-05-14 00:00 |
18:11:27.36 |
+18:27:53.1 |
HIP 89141 |
8.57 |
| 2026-05-14 12:00 |
18:11:24.93 |
+18:28:14.7 |
HIP 89141 |
9.04 |
| 2026-05-15 00:00 |
18:11:22.49 |
+18:28:36.1 |
HIP 89070 |
9.31 |
| 2026-05-15 12:00 |
18:11:20.02 |
+18:28:57.2 |
HIP 89070 |
8.67 |
| 2026-05-16 00:00 |
18:11:17.53 |
+18:29:18.1 |
HIP 89070 |
8.04 |
| 2026-05-16 12:00 |
18:11:15.03 |
+18:29:38.8 |
HIP 89070 |
7.41 |
| 2026-05-17 00:00 |
18:11:12.50 |
+18:29:59.2 |
HIP 89070 |
6.79 |
| 2026-05-17 12:00 |
18:11:09.95 |
+18:30:19.3 |
HIP 89070 |
6.18 |
| 2026-05-18 00:00 |
18:11:07.38 |
+18:30:39.2 |
HIP 89070 |
5.59 |
| 2026-05-18 12:00 |
18:11:04.80 |
+18:30:58.9 |
HIP 89070 |
5.01 |
| 2026-05-19 00:00 |
18:11:02.19 |
+18:31:18.3 |
HIP 89070 |
4.47 |
| 2026-05-19 12:00 |
18:10:59.56 |
+18:31:37.4 |
HIP 89070 |
3.96 |
| 2026-05-20 00:00 |
18:10:56.92 |
+18:31:56.3 |
HIP 89070 |
3.52 |
| 2026-05-20 12:00 |
18:10:54.26 |
+18:32:14.9 |
HIP 89070 |
3.16 |
| 2026-05-21 00:00 |
18:10:51.58 |
+18:32:33.3 |
HIP 89070 |
2.93 |
| 2026-05-21 12:00 |
18:10:48.88 |
+18:32:51.4 |
HIP 89070 |
2.85 |
| 2026-05-22 00:00 |
18:10:46.17 |
+18:33:09.2 |
HIP 89070 |
2.94 |
| 2026-05-22 12:00 |
18:10:43.43 |
+18:33:26.8 |
HIP 89070 |
3.19 |
| 2026-05-23 00:00 |
18:10:40.68 |
+18:33:44.1 |
HIP 89070 |
3.55 |
| 2026-05-23 12:00 |
18:10:37.92 |
+18:34:01.1 |
HIP 89070 |
4.01 |
| 2026-05-24 00:00 |
18:10:35.13 |
+18:34:17.9 |
HIP 89070 |
4.54 |
| 2026-05-24 12:00 |
18:10:32.33 |
+18:34:34.4 |
HIP 89070 |
5.10 |
| 2026-05-25 00:00 |
18:10:29.52 |
+18:34:50.6 |
HIP 89070 |
5.71 |
| 2026-05-25 12:00 |
18:10:26.69 |
+18:35:06.5 |
HIP 89070 |
6.33 |
| 2026-05-26 00:00 |
18:10:23.84 |
+18:35:22.2 |
HIP 89070 |
6.97 |
| 2026-05-26 12:00 |
18:10:20.98 |
+18:35:37.6 |
HIP 89070 |
7.63 |
| 2026-05-27 00:00 |
18:10:18.10 |
+18:35:52.7 |
HIP 89070 |
8.30 |
| 2026-05-27 12:00 |
18:10:15.21 |
+18:36:07.6 |
HIP 89070 |
8.97 |
| 2026-05-28 00:00 |
18:10:12.30 |
+18:36:22.2 |
HIP 89070 |
9.66 |
| 2026-05-28 12:00 |
18:10:09.38 |
+18:36:36.5 |
HIP 89070 |
10.35 |
| 2026-05-29 00:00 |
18:10:06.45 |
+18:36:50.5 |
HIP 89070 |
11.04 |
| 2026-05-29 12:00 |
18:10:03.50 |
+18:37:04.2 |
HIP 89070 |
11.74 |
| 2026-05-30 00:00 |
18:10:00.54 |
+18:37:17.7 |
HIP 89070 |
12.45 |
| 2026-05-30 12:00 |
18:09:57.57 |
+18:37:30.9 |
HIP 89070 |
13.15 |
| 2026-05-31 00:00 |
18:09:54.58 |
+18:37:43.8 |
HIP 89070 |
13.86 |
| 2026-05-31 12:00 |
18:09:51.58 |
+18:37:56.4 |
HIP 89070 |
14.58 |
| 2026-06-01 00:00 |
18:09:48.56 |
+18:38:08.7 |
HIP 89070 |
15.29 |
| 2026-06-01 12:00 |
18:09:45.54 |
+18:38:20.7 |
HIP 88875 |
15.94 |
| 2026-06-02 00:00 |
18:09:42.50 |
+18:38:32.5 |
HIP 88875 |
15.22 |