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) |
| 2026-05-12 00:00 |
02:27:33.03 |
-07:20:39.0 |
HIP 11470 |
10.54 |
| 2026-05-12 12:00 |
02:27:34.49 |
-07:20:32.8 |
HIP 11470 |
10.25 |
| 2026-05-13 00:00 |
02:27:35.95 |
-07:20:26.7 |
HIP 11470 |
9.96 |
| 2026-05-13 12:00 |
02:27:37.40 |
-07:20:20.7 |
HIP 11470 |
9.67 |
| 2026-05-14 00:00 |
02:27:38.85 |
-07:20:14.8 |
HIP 11470 |
9.40 |
| 2026-05-14 12:00 |
02:27:40.30 |
-07:20:08.9 |
HIP 11470 |
9.13 |
| 2026-05-15 00:00 |
02:27:41.75 |
-07:20:03.2 |
HIP 11470 |
8.88 |
| 2026-05-15 12:00 |
02:27:43.19 |
-07:19:57.5 |
HIP 11470 |
8.63 |
| 2026-05-16 00:00 |
02:27:44.63 |
-07:19:52.0 |
HIP 11470 |
8.40 |
| 2026-05-16 12:00 |
02:27:46.06 |
-07:19:46.5 |
HIP 11470 |
8.17 |
| 2026-05-17 00:00 |
02:27:47.49 |
-07:19:41.1 |
HIP 11470 |
7.96 |
| 2026-05-17 12:00 |
02:27:48.92 |
-07:19:35.8 |
HIP 11470 |
7.76 |
| 2026-05-18 00:00 |
02:27:50.35 |
-07:19:30.6 |
HIP 11470 |
7.58 |
| 2026-05-18 12:00 |
02:27:51.77 |
-07:19:25.5 |
HIP 11470 |
7.41 |
| 2026-05-19 00:00 |
02:27:53.18 |
-07:19:20.5 |
HIP 11470 |
7.26 |
| 2026-05-19 12:00 |
02:27:54.59 |
-07:19:15.6 |
HIP 11470 |
7.12 |
| 2026-05-20 00:00 |
02:27:56.00 |
-07:19:10.8 |
HIP 11470 |
7.00 |
| 2026-05-20 12:00 |
02:27:57.41 |
-07:19:06.0 |
HIP 11470 |
6.90 |
| 2026-05-21 00:00 |
02:27:58.80 |
-07:19:01.4 |
HIP 11508 |
6.69 |
| 2026-05-21 12:00 |
02:28:00.20 |
-07:18:56.8 |
HIP 11508 |
6.41 |
| 2026-05-22 00:00 |
02:28:01.59 |
-07:18:52.4 |
HIP 11508 |
6.14 |
| 2026-05-22 12:00 |
02:28:02.97 |
-07:18:48.0 |
HIP 11508 |
5.89 |
| 2026-05-23 00:00 |
02:28:04.35 |
-07:18:43.8 |
HIP 11508 |
5.64 |
| 2026-05-23 12:00 |
02:28:05.73 |
-07:18:39.6 |
HIP 11508 |
5.40 |
| 2026-05-24 00:00 |
02:28:07.10 |
-07:18:35.5 |
HIP 11508 |
5.17 |
| 2026-05-24 12:00 |
02:28:08.47 |
-07:18:31.5 |
HIP 11508 |
4.96 |
| 2026-05-25 00:00 |
02:28:09.83 |
-07:18:27.6 |
HIP 11508 |
4.77 |
| 2026-05-25 12:00 |
02:28:11.18 |
-07:18:23.8 |
HIP 11508 |
4.59 |
| 2026-05-26 00:00 |
02:28:12.53 |
-07:18:20.1 |
HIP 11508 |
4.43 |
| 2026-05-26 12:00 |
02:28:13.87 |
-07:18:16.5 |
HIP 11508 |
4.29 |
| 2026-05-27 00:00 |
02:28:15.21 |
-07:18:13.0 |
HIP 11508 |
4.18 |
| 2026-05-27 12:00 |
02:28:16.55 |
-07:18:09.6 |
HIP 11508 |
4.08 |
| 2026-05-28 00:00 |
02:28:17.87 |
-07:18:06.3 |
HIP 11508 |
4.01 |
| 2026-05-28 12:00 |
02:28:19.19 |
-07:18:03.0 |
HIP 11508 |
3.97 |
| 2026-05-29 00:00 |
02:28:20.51 |
-07:17:59.9 |
HIP 11508 |
3.96 |
| 2026-05-29 12:00 |
02:28:21.82 |
-07:17:56.9 |
HIP 11508 |
3.97 |
| 2026-05-30 00:00 |
02:28:23.12 |
-07:17:53.9 |
HIP 11508 |
4.00 |
| 2026-05-30 12:00 |
02:28:24.42 |
-07:17:51.1 |
HIP 11508 |
4.06 |
| 2026-05-31 00:00 |
02:28:25.71 |
-07:17:48.3 |
HIP 11508 |
4.14 |
| 2026-05-31 12:00 |
02:28:26.99 |
-07:17:45.7 |
HIP 11508 |
4.25 |
| 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 |