메타데이터
| 항목 |
값 |
| Designation |
C/1964 N1 (Ikeya) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1964-08-01T05:13:48.668160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:16Z |
| Obs used |
36 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1964-07-28.0000000 |
| e |
0.98529909 |
| q (au) |
0.821742 |
| a (au) |
55.897329 |
| i (deg) |
171.919437 |
| Ω (om, deg) |
269.947994 |
| ω (w, deg) |
290.768689 |
| M (ma, deg) |
359.990052 |
밝기
산란 + 전체 선형
$$
M_a = (7.144 + 3.169\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.144 |
| n |
3.169 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.000 |
| 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 |
11:19:14.24 |
+12:58:23.7 |
HIP 55262 |
25.12 |
| 2026-05-12 12:00 |
11:19:13.48 |
+12:58:25.2 |
HIP 55262 |
25.08 |
| 2026-05-13 00:00 |
11:19:12.72 |
+12:58:26.6 |
HIP 55262 |
25.05 |
| 2026-05-13 12:00 |
11:19:11.98 |
+12:58:27.8 |
HIP 55262 |
25.01 |
| 2026-05-14 00:00 |
11:19:11.25 |
+12:58:29.1 |
HIP 55262 |
24.99 |
| 2026-05-14 12:00 |
11:19:10.53 |
+12:58:30.2 |
HIP 55262 |
24.96 |
| 2026-05-15 00:00 |
11:19:09.82 |
+12:58:31.2 |
HIP 55262 |
24.94 |
| 2026-05-15 12:00 |
11:19:09.13 |
+12:58:32.1 |
HIP 55262 |
24.92 |
| 2026-05-16 00:00 |
11:19:08.45 |
+12:58:33.0 |
HIP 55262 |
24.90 |
| 2026-05-16 12:00 |
11:19:07.77 |
+12:58:33.8 |
HIP 55262 |
24.88 |
| 2026-05-17 00:00 |
11:19:07.12 |
+12:58:34.4 |
HIP 55262 |
24.87 |
| 2026-05-17 12:00 |
11:19:06.47 |
+12:58:35.0 |
HIP 55262 |
24.86 |
| 2026-05-18 00:00 |
11:19:05.84 |
+12:58:35.5 |
HIP 55262 |
24.85 |
| 2026-05-18 12:00 |
11:19:05.22 |
+12:58:35.9 |
HIP 55262 |
24.85 |
| 2026-05-19 00:00 |
11:19:04.61 |
+12:58:36.3 |
HIP 55262 |
24.85 |
| 2026-05-19 12:00 |
11:19:04.01 |
+12:58:36.5 |
HIP 55262 |
24.85 |
| 2026-05-20 00:00 |
11:19:03.43 |
+12:58:36.7 |
HIP 55262 |
24.85 |
| 2026-05-20 12:00 |
11:19:02.86 |
+12:58:36.7 |
HIP 55262 |
24.85 |
| 2026-05-21 00:00 |
11:19:02.30 |
+12:58:36.7 |
HIP 55262 |
24.86 |
| 2026-05-21 12:00 |
11:19:01.75 |
+12:58:36.6 |
HIP 55262 |
24.86 |
| 2026-05-22 00:00 |
11:19:01.22 |
+12:58:36.4 |
HIP 55262 |
24.87 |
| 2026-05-22 12:00 |
11:19:00.70 |
+12:58:36.1 |
HIP 55262 |
24.89 |
| 2026-05-23 00:00 |
11:19:00.19 |
+12:58:35.8 |
HIP 55262 |
24.90 |
| 2026-05-23 12:00 |
11:18:59.70 |
+12:58:35.3 |
HIP 55262 |
24.92 |
| 2026-05-24 00:00 |
11:18:59.22 |
+12:58:34.8 |
HIP 55262 |
24.93 |
| 2026-05-24 12:00 |
11:18:58.75 |
+12:58:34.1 |
HIP 55262 |
24.95 |
| 2026-05-25 00:00 |
11:18:58.29 |
+12:58:33.4 |
HIP 55262 |
24.97 |
| 2026-05-25 12:00 |
11:18:57.85 |
+12:58:32.6 |
HIP 55262 |
24.99 |
| 2026-05-26 00:00 |
11:18:57.41 |
+12:58:31.8 |
HIP 55262 |
25.02 |
| 2026-05-26 12:00 |
11:18:57.00 |
+12:58:30.8 |
HIP 55262 |
25.04 |
| 2026-05-27 00:00 |
11:18:56.59 |
+12:58:29.7 |
HIP 55262 |
25.07 |
| 2026-05-27 12:00 |
11:18:56.20 |
+12:58:28.6 |
HIP 55262 |
25.10 |
| 2026-05-28 00:00 |
11:18:55.82 |
+12:58:27.4 |
HIP 55262 |
25.13 |
| 2026-05-28 12:00 |
11:18:55.45 |
+12:58:26.1 |
HIP 55262 |
25.16 |
| 2026-05-29 00:00 |
11:18:55.09 |
+12:58:24.7 |
HIP 55262 |
25.19 |
| 2026-05-29 12:00 |
11:18:54.75 |
+12:58:23.2 |
HIP 55262 |
25.23 |
| 2026-05-30 00:00 |
11:18:54.42 |
+12:58:21.7 |
HIP 55262 |
25.26 |
| 2026-05-30 12:00 |
11:18:54.11 |
+12:58:20.0 |
HIP 55262 |
25.30 |
| 2026-05-31 00:00 |
11:18:53.80 |
+12:58:18.3 |
HIP 55262 |
25.34 |
| 2026-05-31 12:00 |
11:18:53.51 |
+12:58:16.5 |
HIP 55262 |
25.37 |
| 2026-06-01 00:00 |
11:18:53.24 |
+12:58:14.6 |
HIP 55262 |
25.41 |
| 2026-06-01 12:00 |
11:18:52.97 |
+12:58:12.6 |
HIP 55262 |
25.46 |
| 2026-06-02 00:00 |
11:18:52.72 |
+12:58:10.6 |
HIP 55262 |
25.50 |