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 |
0.970 |
| gb |
-0.828 |
| 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) |
| 2026-03-26 00:00 |
02:25:18.93 |
-07:35:45.6 |
HIP 11191 |
20.66 |
| 2026-03-26 12:00 |
02:25:20.16 |
-07:35:33.4 |
HIP 11191 |
20.81 |
| 2026-03-27 00:00 |
02:25:21.41 |
-07:35:21.3 |
HIP 11191 |
20.96 |
| 2026-03-27 12:00 |
02:25:22.66 |
-07:35:09.2 |
HIP 11191 |
21.12 |
| 2026-03-28 00:00 |
02:25:23.92 |
-07:34:57.1 |
HIP 11191 |
21.29 |
| 2026-03-28 12:00 |
02:25:25.19 |
-07:34:45.0 |
HIP 11191 |
21.46 |
| 2026-03-29 00:00 |
02:25:26.47 |
-07:34:33.0 |
HIP 11191 |
21.64 |
| 2026-03-29 12:00 |
02:25:27.75 |
-07:34:21.1 |
HIP 11191 |
21.83 |
| 2026-03-30 00:00 |
02:25:29.03 |
-07:34:09.1 |
HIP 11191 |
22.03 |
| 2026-03-30 12:00 |
02:25:30.33 |
-07:33:57.2 |
HIP 11191 |
22.23 |
| 2026-03-31 00:00 |
02:25:31.63 |
-07:33:45.4 |
HIP 11191 |
22.43 |
| 2026-03-31 12:00 |
02:25:32.93 |
-07:33:33.6 |
HIP 11191 |
22.65 |
| 2026-04-01 00:00 |
02:25:34.25 |
-07:33:21.8 |
HIP 11191 |
22.87 |
| 2026-04-01 12:00 |
02:25:35.57 |
-07:33:10.1 |
HIP 11191 |
23.09 |
| 2026-04-02 00:00 |
02:25:36.89 |
-07:32:58.4 |
HIP 11191 |
23.32 |
| 2026-04-02 12:00 |
02:25:38.22 |
-07:32:46.8 |
HIP 11191 |
23.56 |
| 2026-04-03 00:00 |
02:25:39.56 |
-07:32:35.2 |
HIP 11191 |
23.80 |
| 2026-04-03 12:00 |
02:25:40.90 |
-07:32:23.6 |
HIP 11191 |
24.05 |
| 2026-04-04 00:00 |
02:25:42.25 |
-07:32:12.1 |
HIP 11191 |
24.30 |
| 2026-04-04 12:00 |
02:25:43.60 |
-07:32:00.6 |
HIP 11191 |
24.56 |
| 2026-04-05 00:00 |
02:25:44.96 |
-07:31:49.2 |
HIP 11191 |
24.82 |
| 2026-04-05 12:00 |
02:25:46.32 |
-07:31:37.8 |
HIP 11191 |
25.09 |
| 2026-04-06 00:00 |
02:25:47.69 |
-07:31:26.5 |
HIP 11191 |
25.36 |
| 2026-04-06 12:00 |
02:25:49.07 |
-07:31:15.2 |
HIP 11191 |
25.64 |
| 2026-04-07 00:00 |
02:25:50.45 |
-07:31:04.0 |
HIP 11191 |
25.92 |
| 2026-04-07 12:00 |
02:25:51.83 |
-07:30:52.8 |
HIP 11191 |
26.20 |
| 2026-04-08 00:00 |
02:25:53.22 |
-07:30:41.7 |
HIP 11191 |
26.49 |
| 2026-04-08 12:00 |
02:25:54.61 |
-07:30:30.6 |
HIP 11191 |
26.78 |
| 2026-04-09 00:00 |
02:25:56.01 |
-07:30:19.6 |
HIP 11191 |
27.08 |
| 2026-04-09 12:00 |
02:25:57.41 |
-07:30:08.7 |
HIP 11191 |
27.38 |
| 2026-04-10 00:00 |
02:25:58.82 |
-07:29:57.7 |
HIP 11191 |
27.68 |
| 2026-04-10 12:00 |
02:26:00.23 |
-07:29:46.9 |
HIP 11191 |
27.99 |
| 2026-04-11 00:00 |
02:26:01.65 |
-07:29:36.1 |
HIP 11191 |
28.30 |
| 2026-04-11 12:00 |
02:26:03.07 |
-07:29:25.3 |
HIP 11191 |
28.61 |
| 2026-04-12 00:00 |
02:26:04.49 |
-07:29:14.6 |
HIP 11191 |
28.93 |
| 2026-04-12 12:00 |
02:26:05.92 |
-07:29:04.0 |
HIP 11191 |
29.25 |
| 2026-04-13 00:00 |
02:26:07.35 |
-07:28:53.4 |
HIP 11191 |
29.57 |
| 2026-04-13 12:00 |
02:26:08.79 |
-07:28:42.9 |
HIP 11191 |
29.90 |
| 2026-04-14 00:00 |
02:26:10.23 |
-07:28:32.4 |
HIP 11191 |
30.22 |
| 2026-04-14 12:00 |
02:26:11.67 |
-07:28:22.0 |
HIP 11191 |
30.56 |
| 2026-04-15 00:00 |
02:26:13.11 |
-07:28:11.7 |
HIP 11470 |
30.63 |
| 2026-04-15 12:00 |
02:26:14.56 |
-07:28:01.4 |
HIP 11470 |
30.23 |
| 2026-04-16 00:00 |
02:26:16.01 |
-07:27:51.2 |
HIP 11470 |
29.84 |