메타데이터
| 항목 |
값 |
| Designation |
C/2003 WT42 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-04-10T18:20:21.065280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:36Z |
| Obs used |
2466 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
8.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-04-09.0000000 |
| e |
1.00258438 |
| q (au) |
5.190924 |
| a (au) |
-2008.572797 |
| i (deg) |
31.410588 |
| Ω (om, deg) |
48.453889 |
| ω (w, deg) |
92.466923 |
| M (ma, deg) |
-0.000019 |
밝기
산란 + 전체 선형
$$
M_a = (-0.750 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
-0.750 |
| 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 |
| 2003-12-01 |
2006-04-02 |
-4.0705 |
+3.107 |
| 2006-04-17 |
2007-07-07 |
+16.4914 |
-11.805 |
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 |
18:05:23.30 |
-46:35:10.1 |
HIP 88619 |
10.97 |
| 2026-09-20 12:00 |
18:05:23.42 |
-46:34:53.1 |
HIP 88619 |
10.69 |
| 2026-09-21 00:00 |
18:05:23.58 |
-46:34:36.1 |
HIP 88619 |
10.41 |
| 2026-09-21 12:00 |
18:05:23.78 |
-46:34:19.2 |
HIP 88619 |
10.12 |
| 2026-09-22 00:00 |
18:05:24.02 |
-46:34:02.2 |
HIP 88619 |
9.84 |
| 2026-09-22 12:00 |
18:05:24.30 |
-46:33:45.2 |
HIP 88619 |
9.55 |
| 2026-09-23 00:00 |
18:05:24.61 |
-46:33:28.2 |
HIP 88619 |
9.26 |
| 2026-09-23 12:00 |
18:05:24.97 |
-46:33:11.2 |
HIP 88619 |
8.97 |
| 2026-09-24 00:00 |
18:05:25.36 |
-46:32:54.2 |
HIP 88619 |
8.68 |
| 2026-09-24 12:00 |
18:05:25.80 |
-46:32:37.2 |
HIP 88619 |
8.39 |
| 2026-09-25 00:00 |
18:05:26.27 |
-46:32:20.2 |
HIP 88619 |
8.10 |
| 2026-09-25 12:00 |
18:05:26.78 |
-46:32:03.2 |
HIP 88619 |
7.80 |
| 2026-09-26 00:00 |
18:05:27.33 |
-46:31:46.2 |
HIP 88619 |
7.50 |
| 2026-09-26 12:00 |
18:05:27.92 |
-46:31:29.3 |
HIP 88619 |
7.21 |
| 2026-09-27 00:00 |
18:05:28.54 |
-46:31:12.3 |
HIP 88619 |
6.91 |
| 2026-09-27 12:00 |
18:05:29.21 |
-46:30:55.4 |
HIP 88619 |
6.61 |
| 2026-09-28 00:00 |
18:05:29.91 |
-46:30:38.5 |
HIP 88619 |
6.31 |
| 2026-09-28 12:00 |
18:05:30.65 |
-46:30:21.5 |
HIP 88619 |
6.01 |
| 2026-09-29 00:00 |
18:05:31.43 |
-46:30:04.6 |
HIP 88619 |
5.71 |
| 2026-09-29 12:00 |
18:05:32.25 |
-46:29:47.8 |
HIP 88619 |
5.41 |
| 2026-09-30 00:00 |
18:05:33.10 |
-46:29:30.9 |
HIP 88619 |
5.12 |
| 2026-09-30 12:00 |
18:05:34.00 |
-46:29:14.0 |
HIP 88619 |
4.82 |
| 2026-10-01 00:00 |
18:05:34.93 |
-46:28:57.2 |
HIP 88619 |
4.53 |
| 2026-10-01 12:00 |
18:05:35.90 |
-46:28:40.4 |
HIP 88619 |
4.25 |
| 2026-10-02 00:00 |
18:05:36.91 |
-46:28:23.6 |
HIP 88619 |
3.97 |
| 2026-10-02 12:00 |
18:05:37.96 |
-46:28:06.9 |
HIP 88619 |
3.70 |
| 2026-10-03 00:00 |
18:05:39.04 |
-46:27:50.1 |
HIP 88619 |
3.44 |
| 2026-10-03 12:00 |
18:05:40.16 |
-46:27:33.4 |
HIP 88619 |
3.20 |
| 2026-10-04 00:00 |
18:05:41.32 |
-46:27:16.7 |
HIP 88619 |
2.98 |
| 2026-10-04 12:00 |
18:05:42.52 |
-46:27:00.1 |
HIP 88619 |
2.79 |
| 2026-10-05 00:00 |
18:05:43.76 |
-46:26:43.5 |
HIP 88619 |
2.64 |
| 2026-10-05 12:00 |
18:05:45.03 |
-46:26:26.9 |
HIP 88619 |
2.52 |
| 2026-10-06 00:00 |
18:05:46.34 |
-46:26:10.3 |
HIP 88619 |
2.46 |
| 2026-10-06 12:00 |
18:05:47.69 |
-46:25:53.8 |
HIP 88619 |
2.46 |
| 2026-10-07 00:00 |
18:05:49.08 |
-46:25:37.3 |
HIP 88619 |
2.51 |
| 2026-10-07 12:00 |
18:05:50.51 |
-46:25:20.8 |
HIP 88619 |
2.62 |
| 2026-10-08 00:00 |
18:05:51.97 |
-46:25:04.4 |
HIP 88619 |
2.78 |
| 2026-10-08 12:00 |
18:05:53.47 |
-46:24:48.0 |
HIP 88619 |
2.99 |
| 2026-10-09 00:00 |
18:05:55.00 |
-46:24:31.7 |
HIP 88619 |
3.23 |
| 2026-10-09 12:00 |
18:05:56.58 |
-46:24:15.4 |
HIP 88619 |
3.50 |
| 2026-10-10 00:00 |
18:05:58.19 |
-46:23:59.1 |
HIP 88619 |
3.80 |
| 2026-10-10 12:00 |
18:05:59.84 |
-46:23:42.9 |
HIP 88619 |
4.12 |
| 2026-10-11 00:00 |
18:06:01.52 |
-46:23:26.7 |
HIP 88619 |
4.46 |