C/1966 R1 (Ikeya-Everhart)
메타데이터
| 항목 |
값 |
| Designation |
C/1966 R1 (Ikeya-Everhart) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1966-08-05T07:42:01.379520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
23 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1966-09-23.0000000 |
| e |
1.00004638 |
| q (au) |
0.881833 |
| a (au) |
-19014.652685 |
| i (deg) |
48.278876 |
| Ω (om, deg) |
107.658924 |
| ω (w, deg) |
50.044476 |
| M (ma, deg) |
0.000018 |
밝기
산란 + 전체 선형
$$
M_a = (6.490 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.490 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.982 |
| 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) |
| 2026-02-03 00:00 |
21:53:33.27 |
-41:56:16.7 |
HIP 108021 |
16.17 |
| 2026-02-03 12:00 |
21:53:35.02 |
-41:56:08.6 |
HIP 108021 |
16.41 |
| 2026-02-04 00:00 |
21:53:36.78 |
-41:56:00.5 |
HIP 108021 |
16.65 |
| 2026-02-04 12:00 |
21:53:38.54 |
-41:55:52.5 |
HIP 108021 |
16.90 |
| 2026-02-05 00:00 |
21:53:40.31 |
-41:55:44.5 |
HIP 108021 |
17.15 |
| 2026-02-05 12:00 |
21:53:42.07 |
-41:55:36.7 |
HIP 108021 |
17.40 |
| 2026-02-06 00:00 |
21:53:43.84 |
-41:55:28.9 |
HIP 108021 |
17.65 |
| 2026-02-06 12:00 |
21:53:45.61 |
-41:55:21.2 |
HIP 108021 |
17.91 |
| 2026-02-07 00:00 |
21:53:47.38 |
-41:55:13.5 |
HIP 108021 |
18.17 |
| 2026-02-07 12:00 |
21:53:49.16 |
-41:55:06.0 |
HIP 108021 |
18.43 |
| 2026-02-08 00:00 |
21:53:50.94 |
-41:54:58.5 |
HIP 108021 |
18.69 |
| 2026-02-08 12:00 |
21:53:52.72 |
-41:54:51.1 |
HIP 108021 |
18.96 |
| 2026-02-09 00:00 |
21:53:54.50 |
-41:54:43.8 |
HIP 108021 |
19.23 |
| 2026-02-09 12:00 |
21:53:56.28 |
-41:54:36.6 |
HIP 108021 |
19.50 |
| 2026-02-10 00:00 |
21:53:58.07 |
-41:54:29.4 |
HIP 108021 |
19.77 |
| 2026-02-10 12:00 |
21:53:59.85 |
-41:54:22.3 |
HIP 108021 |
20.04 |
| 2026-02-11 00:00 |
21:54:01.64 |
-41:54:15.4 |
HIP 108021 |
20.31 |
| 2026-02-11 12:00 |
21:54:03.43 |
-41:54:08.5 |
HIP 108021 |
20.59 |
| 2026-02-12 00:00 |
21:54:05.21 |
-41:54:01.6 |
HIP 108229 |
20.39 |
| 2026-02-12 12:00 |
21:54:07.00 |
-41:53:54.9 |
HIP 108229 |
20.06 |
| 2026-02-13 00:00 |
21:54:08.80 |
-41:53:48.2 |
HIP 108229 |
19.73 |
| 2026-02-13 12:00 |
21:54:10.59 |
-41:53:41.7 |
HIP 108229 |
19.40 |
| 2026-02-14 00:00 |
21:54:12.38 |
-41:53:35.2 |
HIP 108229 |
19.07 |
| 2026-02-14 12:00 |
21:54:14.17 |
-41:53:28.8 |
HIP 108229 |
18.75 |
| 2026-02-15 00:00 |
21:54:15.96 |
-41:53:22.5 |
HIP 108229 |
18.43 |
| 2026-02-15 12:00 |
21:54:17.75 |
-41:53:16.2 |
HIP 108229 |
18.10 |
| 2026-02-16 00:00 |
21:54:19.55 |
-41:53:10.1 |
HIP 108229 |
17.79 |
| 2026-02-16 12:00 |
21:54:21.34 |
-41:53:04.1 |
HIP 108229 |
17.47 |
| 2026-02-17 00:00 |
21:54:23.13 |
-41:52:58.1 |
HIP 108229 |
17.15 |
| 2026-02-17 12:00 |
21:54:24.92 |
-41:52:52.2 |
HIP 108229 |
16.84 |
| 2026-02-18 00:00 |
21:54:26.71 |
-41:52:46.4 |
HIP 108229 |
16.53 |
| 2026-02-18 12:00 |
21:54:28.50 |
-41:52:40.7 |
HIP 108229 |
16.22 |
| 2026-02-19 00:00 |
21:54:30.29 |
-41:52:35.1 |
HIP 108229 |
15.92 |
| 2026-02-19 12:00 |
21:54:32.08 |
-41:52:29.6 |
HIP 108229 |
15.62 |
| 2026-02-20 00:00 |
21:54:33.86 |
-41:52:24.2 |
HIP 108229 |
15.32 |
| 2026-02-20 12:00 |
21:54:35.65 |
-41:52:18.9 |
HIP 108229 |
15.02 |
| 2026-02-21 00:00 |
21:54:37.43 |
-41:52:13.6 |
HIP 108229 |
14.73 |
| 2026-02-21 12:00 |
21:54:39.21 |
-41:52:08.5 |
HIP 108229 |
14.44 |
| 2026-02-22 00:00 |
21:54:40.99 |
-41:52:03.4 |
HIP 108229 |
14.16 |
| 2026-02-22 12:00 |
21:54:42.77 |
-41:51:58.5 |
HIP 108229 |
13.88 |
| 2026-02-23 00:00 |
21:54:44.55 |
-41:51:53.6 |
HIP 108229 |
13.60 |
| 2026-02-23 12:00 |
21:54:46.32 |
-41:51:48.8 |
HIP 108229 |
13.33 |
| 2026-02-24 00:00 |
21:54:48.10 |
-41:51:44.2 |
HIP 108229 |
13.06 |