메타데이터
| 항목 |
값 |
| Designation |
C/2007 W3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-06-02T19:04:58.730880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:15Z |
| Obs used |
206 |
| NEO |
- |
| M1 |
15.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-02-28.0000000 |
| e |
1.00016327 |
| q (au) |
1.776638 |
| a (au) |
-10881.860403 |
| i (deg) |
78.673550 |
| Ω (om, deg) |
73.069451 |
| ω (w, deg) |
112.625589 |
| M (ma, deg) |
-0.000083 |
밝기
산란 + 전체 선형
$$
M_a = (16.097 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.097 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.577 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
04:00:34.18 |
-68:23:36.3 |
HIP 18577 |
11.35 |
| 2026-06-01 12:00 |
04:00:42.60 |
-68:23:40.4 |
HIP 18577 |
12.11 |
| 2026-06-02 00:00 |
04:00:51.02 |
-68:23:44.8 |
HIP 18577 |
12.88 |
| 2026-06-02 12:00 |
04:00:59.43 |
-68:23:49.6 |
HIP 18577 |
13.65 |
| 2026-06-03 00:00 |
04:01:07.82 |
-68:23:54.8 |
HIP 18577 |
14.43 |
| 2026-06-03 12:00 |
04:01:16.21 |
-68:24:00.3 |
HIP 18577 |
15.20 |
| 2026-06-04 00:00 |
04:01:24.58 |
-68:24:06.2 |
HIP 18577 |
15.97 |
| 2026-06-04 12:00 |
04:01:32.94 |
-68:24:12.4 |
HIP 18577 |
16.75 |
| 2026-06-05 00:00 |
04:01:41.29 |
-68:24:19.1 |
HIP 18577 |
17.52 |
| 2026-06-05 12:00 |
04:01:49.63 |
-68:24:26.1 |
HIP 18577 |
18.30 |
| 2026-06-06 00:00 |
04:01:57.95 |
-68:24:33.4 |
HIP 18577 |
19.07 |
| 2026-06-06 12:00 |
04:02:06.26 |
-68:24:41.2 |
HIP 18577 |
19.85 |
| 2026-06-07 00:00 |
04:02:14.56 |
-68:24:49.3 |
HIP 18577 |
20.62 |
| 2026-06-07 12:00 |
04:02:22.84 |
-68:24:57.7 |
HIP 18577 |
21.39 |
| 2026-06-08 00:00 |
04:02:31.11 |
-68:25:06.6 |
HIP 18577 |
22.17 |
| 2026-06-08 12:00 |
04:02:39.36 |
-68:25:15.8 |
HIP 18577 |
22.94 |
| 2026-06-09 00:00 |
04:02:47.59 |
-68:25:25.3 |
HIP 18577 |
23.72 |
| 2026-06-09 12:00 |
04:02:55.81 |
-68:25:35.2 |
HIP 18577 |
24.49 |
| 2026-06-10 00:00 |
04:03:04.02 |
-68:25:45.5 |
HIP 18577 |
25.26 |
| 2026-06-10 12:00 |
04:03:12.20 |
-68:25:56.2 |
HIP 18577 |
26.04 |
| 2026-06-11 00:00 |
04:03:20.37 |
-68:26:07.2 |
HIP 18577 |
26.81 |
| 2026-06-11 12:00 |
04:03:28.52 |
-68:26:18.6 |
HIP 18577 |
27.58 |
| 2026-06-12 00:00 |
04:03:36.65 |
-68:26:30.3 |
HIP 18577 |
28.35 |
| 2026-06-12 12:00 |
04:03:44.76 |
-68:26:42.4 |
HIP 18577 |
29.12 |
| 2026-06-13 00:00 |
04:03:52.85 |
-68:26:54.8 |
HIP 19324 |
29.58 |
| 2026-06-13 12:00 |
04:04:00.92 |
-68:27:07.7 |
HIP 19324 |
28.84 |
| 2026-06-14 00:00 |
04:04:08.96 |
-68:27:20.8 |
HIP 19324 |
28.10 |
| 2026-06-14 12:00 |
04:04:16.99 |
-68:27:34.3 |
HIP 19324 |
27.35 |
| 2026-06-15 00:00 |
04:04:25.00 |
-68:27:48.2 |
HIP 19324 |
26.61 |
| 2026-06-15 12:00 |
04:04:32.98 |
-68:28:02.5 |
HIP 19324 |
25.87 |
| 2026-06-16 00:00 |
04:04:40.94 |
-68:28:17.1 |
HIP 19324 |
25.12 |
| 2026-06-16 12:00 |
04:04:48.88 |
-68:28:32.0 |
HIP 19324 |
24.38 |
| 2026-06-17 00:00 |
04:04:56.79 |
-68:28:47.3 |
HIP 19324 |
23.64 |
| 2026-06-17 12:00 |
04:05:04.68 |
-68:29:02.9 |
HIP 19324 |
22.90 |
| 2026-06-18 00:00 |
04:05:12.54 |
-68:29:18.9 |
HIP 19324 |
22.16 |
| 2026-06-18 12:00 |
04:05:20.38 |
-68:29:35.3 |
HIP 19324 |
21.41 |
| 2026-06-19 00:00 |
04:05:28.19 |
-68:29:52.0 |
HIP 19324 |
20.67 |
| 2026-06-19 12:00 |
04:05:35.97 |
-68:30:09.0 |
HIP 19324 |
19.93 |
| 2026-06-20 00:00 |
04:05:43.73 |
-68:30:26.4 |
HIP 19324 |
19.19 |
| 2026-06-20 12:00 |
04:05:51.46 |
-68:30:44.1 |
HIP 19324 |
18.45 |
| 2026-06-21 00:00 |
04:05:59.16 |
-68:31:02.1 |
HIP 19324 |
17.72 |
| 2026-06-21 12:00 |
04:06:06.84 |
-68:31:20.5 |
HIP 19324 |
16.98 |
| 2026-06-22 00:00 |
04:06:14.48 |
-68:31:39.3 |
HIP 19324 |
16.24 |