메타데이터
| 항목 |
값 |
| Designation |
C/1987 W3 (Jensen-Shoemaker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1988-01-18T16:22:02.138880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:36Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1988-07-04.0000000 |
| e |
1.00360306 |
| q (au) |
3.332745 |
| a (au) |
-924.976804 |
| i (deg) |
76.700407 |
| Ω (om, deg) |
198.337713 |
| ω (w, deg) |
194.713159 |
| M (ma, deg) |
0.005862 |
밝기
산란 + 전체 선형
$$
M_a = (6.127 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.127 |
| 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 |
12:36:27.97 |
-16:58:19.8 |
HIP 61463 |
13.91 |
| 2026-09-20 12:00 |
12:36:29.80 |
-16:58:28.2 |
HIP 61463 |
14.34 |
| 2026-09-21 00:00 |
12:36:31.64 |
-16:58:36.6 |
HIP 61567 |
14.43 |
| 2026-09-21 12:00 |
12:36:33.47 |
-16:58:45.1 |
HIP 61567 |
14.40 |
| 2026-09-22 00:00 |
12:36:35.31 |
-16:58:53.6 |
HIP 61567 |
14.38 |
| 2026-09-22 12:00 |
12:36:37.16 |
-16:59:02.3 |
HIP 61567 |
14.37 |
| 2026-09-23 00:00 |
12:36:39.00 |
-16:59:11.0 |
HIP 61567 |
14.39 |
| 2026-09-23 12:00 |
12:36:40.85 |
-16:59:19.7 |
HIP 61567 |
14.41 |
| 2026-09-24 00:00 |
12:36:42.70 |
-16:59:28.6 |
HIP 61567 |
14.46 |
| 2026-09-24 12:00 |
12:36:44.55 |
-16:59:37.5 |
HIP 61567 |
14.52 |
| 2026-09-25 00:00 |
12:36:46.41 |
-16:59:46.4 |
HIP 61567 |
14.59 |
| 2026-09-25 12:00 |
12:36:48.27 |
-16:59:55.5 |
HIP 61567 |
14.68 |
| 2026-09-26 00:00 |
12:36:50.13 |
-17:00:04.6 |
HIP 61567 |
14.79 |
| 2026-09-26 12:00 |
12:36:51.99 |
-17:00:13.7 |
HIP 61567 |
14.91 |
| 2026-09-27 00:00 |
12:36:53.85 |
-17:00:23.0 |
HIP 61567 |
15.05 |
| 2026-09-27 12:00 |
12:36:55.72 |
-17:00:32.2 |
HIP 61567 |
15.20 |
| 2026-09-28 00:00 |
12:36:57.58 |
-17:00:41.6 |
HIP 61567 |
15.37 |
| 2026-09-28 12:00 |
12:36:59.45 |
-17:00:51.0 |
HIP 61567 |
15.54 |
| 2026-09-29 00:00 |
12:37:01.32 |
-17:01:00.5 |
HIP 61567 |
15.74 |
| 2026-09-29 12:00 |
12:37:03.19 |
-17:01:10.0 |
HIP 61567 |
15.94 |
| 2026-09-30 00:00 |
12:37:05.06 |
-17:01:19.6 |
HIP 61567 |
16.16 |
| 2026-09-30 12:00 |
12:37:06.93 |
-17:01:29.3 |
HIP 61567 |
16.39 |
| 2026-10-01 00:00 |
12:37:08.80 |
-17:01:39.0 |
HIP 61567 |
16.63 |
| 2026-10-01 12:00 |
12:37:10.68 |
-17:01:48.7 |
HIP 61567 |
16.88 |
| 2026-10-02 00:00 |
12:37:12.55 |
-17:01:58.6 |
HIP 61567 |
17.14 |
| 2026-10-02 12:00 |
12:37:14.43 |
-17:02:08.4 |
HIP 61567 |
17.41 |
| 2026-10-03 00:00 |
12:37:16.30 |
-17:02:18.4 |
HIP 61567 |
17.70 |
| 2026-10-03 12:00 |
12:37:18.18 |
-17:02:28.4 |
HIP 61567 |
17.99 |
| 2026-10-04 00:00 |
12:37:20.05 |
-17:02:38.4 |
HIP 61567 |
18.29 |
| 2026-10-04 12:00 |
12:37:21.93 |
-17:02:48.5 |
HIP 61567 |
18.59 |
| 2026-10-05 00:00 |
12:37:23.80 |
-17:02:58.7 |
HIP 61567 |
18.91 |
| 2026-10-05 12:00 |
12:37:25.68 |
-17:03:08.9 |
HIP 61567 |
19.23 |
| 2026-10-06 00:00 |
12:37:27.55 |
-17:03:19.1 |
HIP 61567 |
19.56 |
| 2026-10-06 12:00 |
12:37:29.42 |
-17:03:29.5 |
HIP 61567 |
19.90 |
| 2026-10-07 00:00 |
12:37:31.30 |
-17:03:39.8 |
HIP 61567 |
20.25 |
| 2026-10-07 12:00 |
12:37:33.17 |
-17:03:50.2 |
HIP 61567 |
20.60 |
| 2026-10-08 00:00 |
12:37:35.04 |
-17:04:00.7 |
HIP 61567 |
20.95 |
| 2026-10-08 12:00 |
12:37:36.91 |
-17:04:11.2 |
HIP 61567 |
21.31 |
| 2026-10-09 00:00 |
12:37:38.78 |
-17:04:21.7 |
HIP 61567 |
21.68 |
| 2026-10-09 12:00 |
12:37:40.64 |
-17:04:32.3 |
HIP 61567 |
22.05 |
| 2026-10-10 00:00 |
12:37:42.51 |
-17:04:43.0 |
HIP 61567 |
22.43 |
| 2026-10-10 12:00 |
12:37:44.37 |
-17:04:53.6 |
HIP 61567 |
22.81 |
| 2026-10-11 00:00 |
12:37:46.24 |
-17:05:04.4 |
HIP 61567 |
23.19 |