메타데이터
| 항목 |
값 |
| Designation |
C/1976 D2 (Schuster) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1975-01-14T16:56:09.628800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:24Z |
| Obs used |
54 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
4.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1976-07-08.0000000 |
| e |
1.00111947 |
| q (au) |
6.879571 |
| a (au) |
-6145.360914 |
| i (deg) |
112.026906 |
| Ω (om, deg) |
22.785994 |
| ω (w, deg) |
193.366827 |
| M (ma, deg) |
0.001105 |
밝기
산란 + 전체 선형
$$
M_a = (-1.560 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
-1.560 |
| n |
6.000 |
| gf |
0.971 |
| gb |
-0.796 |
| 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) |
| 2026-06-01 00:00 |
02:28:28.27 |
-07:17:43.1 |
HIP 11508 |
4.37 |
| 2026-06-01 12:00 |
02:28:29.54 |
-07:17:40.6 |
HIP 11508 |
4.51 |
| 2026-06-02 00:00 |
02:28:30.81 |
-07:17:38.3 |
HIP 11508 |
4.66 |
| 2026-06-02 12:00 |
02:28:32.06 |
-07:17:36.0 |
HIP 11508 |
4.83 |
| 2026-06-03 00:00 |
02:28:33.32 |
-07:17:33.8 |
HIP 11508 |
5.01 |
| 2026-06-03 12:00 |
02:28:34.56 |
-07:17:31.7 |
HIP 11508 |
5.21 |
| 2026-06-04 00:00 |
02:28:35.80 |
-07:17:29.8 |
HIP 11508 |
5.41 |
| 2026-06-04 12:00 |
02:28:37.03 |
-07:17:27.9 |
HIP 11508 |
5.61 |
| 2026-06-05 00:00 |
02:28:38.25 |
-07:17:26.1 |
HIP 11508 |
5.83 |
| 2026-06-05 12:00 |
02:28:39.47 |
-07:17:24.4 |
HIP 11508 |
6.05 |
| 2026-06-06 00:00 |
02:28:40.68 |
-07:17:22.8 |
HIP 11508 |
6.27 |
| 2026-06-06 12:00 |
02:28:41.88 |
-07:17:21.3 |
HIP 11508 |
6.50 |
| 2026-06-07 00:00 |
02:28:43.07 |
-07:17:19.9 |
HIP 11508 |
6.73 |
| 2026-06-07 12:00 |
02:28:44.26 |
-07:17:18.6 |
HIP 11508 |
6.96 |
| 2026-06-08 00:00 |
02:28:45.44 |
-07:17:17.4 |
HIP 11508 |
7.20 |
| 2026-06-08 12:00 |
02:28:46.61 |
-07:17:16.3 |
HIP 11508 |
7.43 |
| 2026-06-09 00:00 |
02:28:47.77 |
-07:17:15.3 |
HIP 11508 |
7.67 |
| 2026-06-09 12:00 |
02:28:48.92 |
-07:17:14.3 |
HIP 11508 |
7.91 |
| 2026-06-10 00:00 |
02:28:50.07 |
-07:17:13.5 |
HIP 11508 |
8.15 |
| 2026-06-10 12:00 |
02:28:51.21 |
-07:17:12.8 |
HIP 11508 |
8.39 |
| 2026-06-11 00:00 |
02:28:52.34 |
-07:17:12.2 |
HIP 11508 |
8.63 |
| 2026-06-11 12:00 |
02:28:53.46 |
-07:17:11.6 |
HIP 11508 |
8.87 |
| 2026-06-12 00:00 |
02:28:54.58 |
-07:17:11.2 |
HIP 11508 |
9.11 |
| 2026-06-12 12:00 |
02:28:55.68 |
-07:17:10.9 |
HIP 11508 |
9.34 |
| 2026-06-13 00:00 |
02:28:56.78 |
-07:17:10.7 |
HIP 11508 |
9.58 |
| 2026-06-13 12:00 |
02:28:57.87 |
-07:17:10.5 |
HIP 11508 |
9.82 |
| 2026-06-14 00:00 |
02:28:58.95 |
-07:17:10.5 |
HIP 11508 |
10.06 |
| 2026-06-14 12:00 |
02:29:00.02 |
-07:17:10.6 |
HIP 11508 |
10.29 |
| 2026-06-15 00:00 |
02:29:01.08 |
-07:17:10.7 |
HIP 11508 |
10.52 |
| 2026-06-15 12:00 |
02:29:02.14 |
-07:17:11.0 |
HIP 11508 |
10.76 |
| 2026-06-16 00:00 |
02:29:03.18 |
-07:17:11.3 |
HIP 11508 |
10.99 |
| 2026-06-16 12:00 |
02:29:04.22 |
-07:17:11.8 |
HIP 11508 |
11.22 |
| 2026-06-17 00:00 |
02:29:05.24 |
-07:17:12.3 |
HIP 11508 |
11.44 |
| 2026-06-17 12:00 |
02:29:06.26 |
-07:17:13.0 |
HIP 11508 |
11.67 |
| 2026-06-18 00:00 |
02:29:07.27 |
-07:17:13.7 |
HIP 11508 |
11.89 |
| 2026-06-18 12:00 |
02:29:08.26 |
-07:17:14.6 |
HIP 11508 |
12.12 |
| 2026-06-19 00:00 |
02:29:09.25 |
-07:17:15.5 |
HIP 11508 |
12.34 |
| 2026-06-19 12:00 |
02:29:10.23 |
-07:17:16.5 |
HIP 11508 |
12.56 |
| 2026-06-20 00:00 |
02:29:11.20 |
-07:17:17.7 |
HIP 11508 |
12.77 |
| 2026-06-20 12:00 |
02:29:12.16 |
-07:17:18.9 |
HIP 11508 |
12.99 |
| 2026-06-21 00:00 |
02:29:13.11 |
-07:17:20.2 |
HIP 11508 |
13.20 |
| 2026-06-21 12:00 |
02:29:14.05 |
-07:17:21.6 |
HIP 11508 |
13.41 |
| 2026-06-22 00:00 |
02:29:14.98 |
-07:17:23.1 |
HIP 11508 |
13.62 |