메타데이터
| 항목 |
값 |
| Designation |
C/1937 D1 (Wilk) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1937-02-21T12:38:22.404480Z |
| Orbit solution date (soln_date, UTC) |
2024-02-20T20:16:49Z |
| Obs used |
17 |
| NEO |
Yes |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1937-03-17.0000000 |
| e |
0.98064326 |
| q (au) |
0.618890 |
| a (au) |
31.972825 |
| i (deg) |
26.014023 |
| Ω (om, deg) |
58.270037 |
| ω (w, deg) |
31.457951 |
| M (ma, deg) |
0.127970 |
밝기
산란 + 전체 선형
$$
M_a = (10.016 + 4.637\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.016 |
| n |
4.637 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.940 |
| δ90 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
17:49:51.69 |
-36:37:51.3 |
HIP 87218 |
10.89 |
| 2026-03-26 12:00 |
17:49:51.45 |
-36:37:57.8 |
HIP 87218 |
10.92 |
| 2026-03-27 00:00 |
17:49:51.20 |
-36:38:04.3 |
HIP 87218 |
10.95 |
| 2026-03-27 12:00 |
17:49:50.92 |
-36:38:10.9 |
HIP 87218 |
10.97 |
| 2026-03-28 00:00 |
17:49:50.63 |
-36:38:17.4 |
HIP 87218 |
10.99 |
| 2026-03-28 12:00 |
17:49:50.32 |
-36:38:23.9 |
HIP 87218 |
11.01 |
| 2026-03-29 00:00 |
17:49:49.98 |
-36:38:30.4 |
HIP 87218 |
11.03 |
| 2026-03-29 12:00 |
17:49:49.63 |
-36:38:36.8 |
HIP 87218 |
11.04 |
| 2026-03-30 00:00 |
17:49:49.26 |
-36:38:43.3 |
HIP 87218 |
11.06 |
| 2026-03-30 12:00 |
17:49:48.86 |
-36:38:49.8 |
HIP 87218 |
11.07 |
| 2026-03-31 00:00 |
17:49:48.45 |
-36:38:56.2 |
HIP 87218 |
11.08 |
| 2026-03-31 12:00 |
17:49:48.02 |
-36:39:02.6 |
HIP 87218 |
11.09 |
| 2026-04-01 00:00 |
17:49:47.56 |
-36:39:09.0 |
HIP 87218 |
11.10 |
| 2026-04-01 12:00 |
17:49:47.09 |
-36:39:15.4 |
HIP 87218 |
11.11 |
| 2026-04-02 00:00 |
17:49:46.60 |
-36:39:21.8 |
HIP 87218 |
11.11 |
| 2026-04-02 12:00 |
17:49:46.09 |
-36:39:28.1 |
HIP 87218 |
11.12 |
| 2026-04-03 00:00 |
17:49:45.56 |
-36:39:34.5 |
HIP 87218 |
11.12 |
| 2026-04-03 12:00 |
17:49:45.01 |
-36:39:40.8 |
HIP 87218 |
11.13 |
| 2026-04-04 00:00 |
17:49:44.44 |
-36:39:47.1 |
HIP 87218 |
11.13 |
| 2026-04-04 12:00 |
17:49:43.85 |
-36:39:53.4 |
HIP 87218 |
11.13 |
| 2026-04-05 00:00 |
17:49:43.24 |
-36:39:59.7 |
HIP 87218 |
11.13 |
| 2026-04-05 12:00 |
17:49:42.61 |
-36:40:05.9 |
HIP 87218 |
11.14 |
| 2026-04-06 00:00 |
17:49:41.96 |
-36:40:12.2 |
HIP 87218 |
11.14 |
| 2026-04-06 12:00 |
17:49:41.30 |
-36:40:18.4 |
HIP 87218 |
11.14 |
| 2026-04-07 00:00 |
17:49:40.61 |
-36:40:24.6 |
HIP 87218 |
11.14 |
| 2026-04-07 12:00 |
17:49:39.91 |
-36:40:30.7 |
HIP 87218 |
11.14 |
| 2026-04-08 00:00 |
17:49:39.18 |
-36:40:36.9 |
HIP 87218 |
11.14 |
| 2026-04-08 12:00 |
17:49:38.44 |
-36:40:43.0 |
HIP 87218 |
11.15 |
| 2026-04-09 00:00 |
17:49:37.67 |
-36:40:49.1 |
HIP 87218 |
11.15 |
| 2026-04-09 12:00 |
17:49:36.89 |
-36:40:55.2 |
HIP 87218 |
11.15 |
| 2026-04-10 00:00 |
17:49:36.09 |
-36:41:01.3 |
HIP 87218 |
11.16 |
| 2026-04-10 12:00 |
17:49:35.27 |
-36:41:07.3 |
HIP 87218 |
11.16 |
| 2026-04-11 00:00 |
17:49:34.44 |
-36:41:13.3 |
HIP 87218 |
11.17 |
| 2026-04-11 12:00 |
17:49:33.58 |
-36:41:19.3 |
HIP 87218 |
11.18 |
| 2026-04-12 00:00 |
17:49:32.70 |
-36:41:25.3 |
HIP 87218 |
11.18 |
| 2026-04-12 12:00 |
17:49:31.81 |
-36:41:31.2 |
HIP 87218 |
11.20 |
| 2026-04-13 00:00 |
17:49:30.90 |
-36:41:37.1 |
HIP 87218 |
11.21 |
| 2026-04-13 12:00 |
17:49:29.96 |
-36:41:43.0 |
HIP 87218 |
11.22 |
| 2026-04-14 00:00 |
17:49:29.01 |
-36:41:48.9 |
HIP 87218 |
11.24 |
| 2026-04-14 12:00 |
17:49:28.04 |
-36:41:54.7 |
HIP 87218 |
11.26 |
| 2026-04-15 00:00 |
17:49:27.06 |
-36:42:00.5 |
HIP 87218 |
11.28 |
| 2026-04-15 12:00 |
17:49:26.05 |
-36:42:06.3 |
HIP 87218 |
11.31 |
| 2026-04-16 00:00 |
17:49:25.03 |
-36:42:12.0 |
HIP 87218 |
11.33 |