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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
11:18:52.48 |
+12:58:08.4 |
HIP 55262 |
25.54 |
| 2026-06-03 00:00 |
11:18:52.26 |
+12:58:06.2 |
HIP 55262 |
25.58 |
| 2026-06-03 12:00 |
11:18:52.04 |
+12:58:03.9 |
HIP 55262 |
25.63 |
| 2026-06-04 00:00 |
11:18:51.84 |
+12:58:01.5 |
HIP 55262 |
25.68 |
| 2026-06-04 12:00 |
11:18:51.66 |
+12:57:59.0 |
HIP 55262 |
25.72 |
| 2026-06-05 00:00 |
11:18:51.48 |
+12:57:56.5 |
HIP 55262 |
25.77 |
| 2026-06-05 12:00 |
11:18:51.32 |
+12:57:53.9 |
HIP 55262 |
25.82 |
| 2026-06-06 00:00 |
11:18:51.18 |
+12:57:51.1 |
HIP 55262 |
25.87 |
| 2026-06-06 12:00 |
11:18:51.04 |
+12:57:48.3 |
HIP 55262 |
25.92 |
| 2026-06-07 00:00 |
11:18:50.92 |
+12:57:45.5 |
HIP 55262 |
25.97 |
| 2026-06-07 12:00 |
11:18:50.81 |
+12:57:42.5 |
HIP 55262 |
26.03 |
| 2026-06-08 00:00 |
11:18:50.71 |
+12:57:39.5 |
HIP 55262 |
26.08 |
| 2026-06-08 12:00 |
11:18:50.63 |
+12:57:36.4 |
HIP 55262 |
26.13 |
| 2026-06-09 00:00 |
11:18:50.56 |
+12:57:33.2 |
HIP 55262 |
26.19 |
| 2026-06-09 12:00 |
11:18:50.50 |
+12:57:29.9 |
HIP 55262 |
26.24 |
| 2026-06-10 00:00 |
11:18:50.46 |
+12:57:26.5 |
HIP 55262 |
26.30 |
| 2026-06-10 12:00 |
11:18:50.43 |
+12:57:23.1 |
HIP 55262 |
26.36 |
| 2026-06-11 00:00 |
11:18:50.41 |
+12:57:19.6 |
HIP 55262 |
26.42 |
| 2026-06-11 12:00 |
11:18:50.41 |
+12:57:16.0 |
HIP 55262 |
26.48 |
| 2026-06-12 00:00 |
11:18:50.42 |
+12:57:12.3 |
HIP 55262 |
26.54 |
| 2026-06-12 12:00 |
11:18:50.44 |
+12:57:08.6 |
HIP 55262 |
26.60 |
| 2026-06-13 00:00 |
11:18:50.47 |
+12:57:04.7 |
HIP 55262 |
26.66 |
| 2026-06-13 12:00 |
11:18:50.52 |
+12:57:00.8 |
HIP 55262 |
26.72 |
| 2026-06-14 00:00 |
11:18:50.58 |
+12:56:56.9 |
HIP 55262 |
26.79 |
| 2026-06-14 12:00 |
11:18:50.65 |
+12:56:52.8 |
HIP 55262 |
26.85 |
| 2026-06-15 00:00 |
11:18:50.74 |
+12:56:48.7 |
HIP 55262 |
26.92 |
| 2026-06-15 12:00 |
11:18:50.84 |
+12:56:44.4 |
HIP 55262 |
26.98 |
| 2026-06-16 00:00 |
11:18:50.95 |
+12:56:40.2 |
HIP 55262 |
27.05 |
| 2026-06-16 12:00 |
11:18:51.07 |
+12:56:35.8 |
HIP 55262 |
27.12 |
| 2026-06-17 00:00 |
11:18:51.21 |
+12:56:31.3 |
HIP 55262 |
27.19 |
| 2026-06-17 12:00 |
11:18:51.36 |
+12:56:26.8 |
HIP 55262 |
27.25 |
| 2026-06-18 00:00 |
11:18:51.53 |
+12:56:22.2 |
HIP 55262 |
27.33 |
| 2026-06-18 12:00 |
11:18:51.70 |
+12:56:17.6 |
HIP 55262 |
27.40 |
| 2026-06-19 00:00 |
11:18:51.89 |
+12:56:12.8 |
HIP 55262 |
27.47 |
| 2026-06-19 12:00 |
11:18:52.10 |
+12:56:08.0 |
HIP 55262 |
27.54 |
| 2026-06-20 00:00 |
11:18:52.31 |
+12:56:03.2 |
HIP 55262 |
27.62 |
| 2026-06-20 12:00 |
11:18:52.54 |
+12:55:58.2 |
HIP 55262 |
27.69 |
| 2026-06-21 00:00 |
11:18:52.78 |
+12:55:53.2 |
HIP 55262 |
27.77 |
| 2026-06-21 12:00 |
11:18:53.03 |
+12:55:48.1 |
HIP 55262 |
27.84 |
| 2026-06-22 00:00 |
11:18:53.30 |
+12:55:42.9 |
HIP 55262 |
27.92 |