메타데이터
| 항목 |
값 |
| Designation |
C/1987 Q1 (Rudenko) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1987-10-09T12:40:34.371840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:33Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
8.400 |
| K1 |
10.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1987-09-27.0000000 |
| e |
1.00044313 |
| q (au) |
0.602602 |
| a (au) |
-1359.867867 |
| i (deg) |
114.875276 |
| Ω (om, deg) |
298.569684 |
| ω (w, deg) |
143.833532 |
| M (ma, deg) |
-0.000246 |
밝기
산란 + 전체 선형
$$
M_a = (7.946 + 3.712\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.946 |
| n |
3.712 |
| 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) |
| 2026-06-01 00:00 |
23:11:01.71 |
-51:51:48.8 |
HIP 114301 |
19.72 |
| 2026-06-01 12:00 |
23:11:01.98 |
-51:52:07.6 |
HIP 114301 |
19.71 |
| 2026-06-02 00:00 |
23:11:02.23 |
-51:52:26.5 |
HIP 114301 |
19.70 |
| 2026-06-02 12:00 |
23:11:02.45 |
-51:52:45.5 |
HIP 114301 |
19.70 |
| 2026-06-03 00:00 |
23:11:02.65 |
-51:53:04.5 |
HIP 114301 |
19.69 |
| 2026-06-03 12:00 |
23:11:02.83 |
-51:53:23.6 |
HIP 114301 |
19.69 |
| 2026-06-04 00:00 |
23:11:02.98 |
-51:53:42.8 |
HIP 114301 |
19.68 |
| 2026-06-04 12:00 |
23:11:03.11 |
-51:54:02.1 |
HIP 114301 |
19.68 |
| 2026-06-05 00:00 |
23:11:03.22 |
-51:54:21.5 |
HIP 114301 |
19.68 |
| 2026-06-05 12:00 |
23:11:03.30 |
-51:54:40.9 |
HIP 114301 |
19.68 |
| 2026-06-06 00:00 |
23:11:03.36 |
-51:55:00.4 |
HIP 114301 |
19.69 |
| 2026-06-06 12:00 |
23:11:03.40 |
-51:55:20.0 |
HIP 114301 |
19.69 |
| 2026-06-07 00:00 |
23:11:03.41 |
-51:55:39.6 |
HIP 114301 |
19.70 |
| 2026-06-07 12:00 |
23:11:03.41 |
-51:55:59.3 |
HIP 114301 |
19.71 |
| 2026-06-08 00:00 |
23:11:03.38 |
-51:56:19.1 |
HIP 114301 |
19.72 |
| 2026-06-08 12:00 |
23:11:03.32 |
-51:56:38.9 |
HIP 114301 |
19.73 |
| 2026-06-09 00:00 |
23:11:03.24 |
-51:56:58.8 |
HIP 114301 |
19.75 |
| 2026-06-09 12:00 |
23:11:03.14 |
-51:57:18.8 |
HIP 114301 |
19.77 |
| 2026-06-10 00:00 |
23:11:03.02 |
-51:57:38.8 |
HIP 114301 |
19.79 |
| 2026-06-10 12:00 |
23:11:02.87 |
-51:57:58.9 |
HIP 114301 |
19.81 |
| 2026-06-11 00:00 |
23:11:02.70 |
-51:58:19.0 |
HIP 114301 |
19.83 |
| 2026-06-11 12:00 |
23:11:02.50 |
-51:58:39.2 |
HIP 114301 |
19.86 |
| 2026-06-12 00:00 |
23:11:02.29 |
-51:58:59.5 |
HIP 114301 |
19.89 |
| 2026-06-12 12:00 |
23:11:02.04 |
-51:59:19.8 |
HIP 114301 |
19.92 |
| 2026-06-13 00:00 |
23:11:01.78 |
-51:59:40.2 |
HIP 114301 |
19.95 |
| 2026-06-13 12:00 |
23:11:01.49 |
-52:00:00.6 |
HIP 114301 |
19.99 |
| 2026-06-14 00:00 |
23:11:01.18 |
-52:00:21.0 |
HIP 114301 |
20.03 |
| 2026-06-14 12:00 |
23:11:00.85 |
-52:00:41.5 |
HIP 114301 |
20.07 |
| 2026-06-15 00:00 |
23:11:00.49 |
-52:01:02.1 |
HIP 114301 |
20.11 |
| 2026-06-15 12:00 |
23:11:00.11 |
-52:01:22.7 |
HIP 114301 |
20.16 |
| 2026-06-16 00:00 |
23:10:59.70 |
-52:01:43.3 |
HIP 114301 |
20.21 |
| 2026-06-16 12:00 |
23:10:59.27 |
-52:02:04.0 |
HIP 114301 |
20.26 |
| 2026-06-17 00:00 |
23:10:58.82 |
-52:02:24.7 |
HIP 114301 |
20.31 |
| 2026-06-17 12:00 |
23:10:58.35 |
-52:02:45.5 |
HIP 114301 |
20.37 |
| 2026-06-18 00:00 |
23:10:57.85 |
-52:03:06.3 |
HIP 114301 |
20.43 |
| 2026-06-18 12:00 |
23:10:57.33 |
-52:03:27.1 |
HIP 114301 |
20.50 |
| 2026-06-19 00:00 |
23:10:56.78 |
-52:03:48.0 |
HIP 114301 |
20.56 |
| 2026-06-19 12:00 |
23:10:56.22 |
-52:04:08.9 |
HIP 114301 |
20.63 |
| 2026-06-20 00:00 |
23:10:55.63 |
-52:04:29.8 |
HIP 114301 |
20.71 |
| 2026-06-20 12:00 |
23:10:55.01 |
-52:04:50.7 |
HIP 114301 |
20.78 |
| 2026-06-21 00:00 |
23:10:54.38 |
-52:05:11.7 |
HIP 114301 |
20.86 |
| 2026-06-21 12:00 |
23:10:53.72 |
-52:05:32.7 |
HIP 114301 |
20.94 |
| 2026-06-22 00:00 |
23:10:53.04 |
-52:05:53.7 |
HIP 114301 |
21.03 |