메타데이터
| 항목 |
값 |
| Designation |
C/1998 W3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-10-06T17:14:54.798720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:57Z |
| Obs used |
162 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
10.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1999-02-19.0000000 |
| e |
1.00089959 |
| q (au) |
4.914592 |
| a (au) |
-5463.131541 |
| i (deg) |
129.186877 |
| Ω (om, deg) |
123.916981 |
| ω (w, deg) |
6.886773 |
| M (ma, deg) |
0.000330 |
밝기
산란 + 전체 선형
$$
M_a = (2.412 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.412 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
21:13:25.22 |
+08:44:56.1 |
HIP 104663 |
20.83 |
| 2026-09-20 12:00 |
21:13:23.34 |
+08:44:35.5 |
HIP 104663 |
20.40 |
| 2026-09-21 00:00 |
21:13:21.47 |
+08:44:14.9 |
HIP 104663 |
19.98 |
| 2026-09-21 12:00 |
21:13:19.62 |
+08:43:54.2 |
HIP 104663 |
19.57 |
| 2026-09-22 00:00 |
21:13:17.79 |
+08:43:33.5 |
HIP 104663 |
19.18 |
| 2026-09-22 12:00 |
21:13:15.97 |
+08:43:12.8 |
HIP 104663 |
18.79 |
| 2026-09-23 00:00 |
21:13:14.16 |
+08:42:52.1 |
HIP 104663 |
18.42 |
| 2026-09-23 12:00 |
21:13:12.37 |
+08:42:31.3 |
HIP 104663 |
18.07 |
| 2026-09-24 00:00 |
21:13:10.59 |
+08:42:10.5 |
HIP 104663 |
17.72 |
| 2026-09-24 12:00 |
21:13:08.83 |
+08:41:49.6 |
HIP 104663 |
17.40 |
| 2026-09-25 00:00 |
21:13:07.09 |
+08:41:28.8 |
HIP 104663 |
17.08 |
| 2026-09-25 12:00 |
21:13:05.36 |
+08:41:07.9 |
HIP 104663 |
16.79 |
| 2026-09-26 00:00 |
21:13:03.65 |
+08:40:46.9 |
HIP 104663 |
16.51 |
| 2026-09-26 12:00 |
21:13:01.95 |
+08:40:26.0 |
HIP 104663 |
16.25 |
| 2026-09-27 00:00 |
21:13:00.27 |
+08:40:05.0 |
HIP 104663 |
16.01 |
| 2026-09-27 12:00 |
21:12:58.60 |
+08:39:44.0 |
HIP 104663 |
15.78 |
| 2026-09-28 00:00 |
21:12:56.95 |
+08:39:23.0 |
HIP 104663 |
15.58 |
| 2026-09-28 12:00 |
21:12:55.32 |
+08:39:02.0 |
HIP 104663 |
15.39 |
| 2026-09-29 00:00 |
21:12:53.70 |
+08:38:40.9 |
HIP 104663 |
15.22 |
| 2026-09-29 12:00 |
21:12:52.10 |
+08:38:19.9 |
HIP 104663 |
15.08 |
| 2026-09-30 00:00 |
21:12:50.51 |
+08:37:58.8 |
HIP 104663 |
14.95 |
| 2026-09-30 12:00 |
21:12:48.94 |
+08:37:37.7 |
HIP 104663 |
14.85 |
| 2026-10-01 00:00 |
21:12:47.39 |
+08:37:16.6 |
HIP 104663 |
14.77 |
| 2026-10-01 12:00 |
21:12:45.86 |
+08:36:55.5 |
HIP 104663 |
14.71 |
| 2026-10-02 00:00 |
21:12:44.34 |
+08:36:34.4 |
HIP 104663 |
14.67 |
| 2026-10-02 12:00 |
21:12:42.84 |
+08:36:13.2 |
HIP 104663 |
14.65 |
| 2026-10-03 00:00 |
21:12:41.36 |
+08:35:52.1 |
HIP 104663 |
14.65 |
| 2026-10-03 12:00 |
21:12:39.89 |
+08:35:31.0 |
HIP 104663 |
14.67 |
| 2026-10-04 00:00 |
21:12:38.44 |
+08:35:09.8 |
HIP 104663 |
14.71 |
| 2026-10-04 12:00 |
21:12:37.01 |
+08:34:48.7 |
HIP 104663 |
14.78 |
| 2026-10-05 00:00 |
21:12:35.60 |
+08:34:27.5 |
HIP 104663 |
14.86 |
| 2026-10-05 12:00 |
21:12:34.20 |
+08:34:06.4 |
HIP 104663 |
14.96 |
| 2026-10-06 00:00 |
21:12:32.83 |
+08:33:45.3 |
HIP 104663 |
15.07 |
| 2026-10-06 12:00 |
21:12:31.47 |
+08:33:24.1 |
HIP 104663 |
15.21 |
| 2026-10-07 00:00 |
21:12:30.12 |
+08:33:03.0 |
HIP 104663 |
15.36 |
| 2026-10-07 12:00 |
21:12:28.80 |
+08:32:41.9 |
HIP 104663 |
15.52 |
| 2026-10-08 00:00 |
21:12:27.50 |
+08:32:20.8 |
HIP 104663 |
15.71 |
| 2026-10-08 12:00 |
21:12:26.21 |
+08:31:59.7 |
HIP 104663 |
15.90 |
| 2026-10-09 00:00 |
21:12:24.94 |
+08:31:38.6 |
HIP 104663 |
16.11 |
| 2026-10-09 12:00 |
21:12:23.70 |
+08:31:17.5 |
HIP 104663 |
16.33 |
| 2026-10-10 00:00 |
21:12:22.47 |
+08:30:56.4 |
HIP 104663 |
16.56 |
| 2026-10-10 12:00 |
21:12:21.25 |
+08:30:35.4 |
HIP 104663 |
16.80 |
| 2026-10-11 00:00 |
21:12:20.06 |
+08:30:14.4 |
HIP 104663 |
17.05 |