메타데이터
| 항목 |
값 |
| Designation |
C/1954 Y1 (Haro-Chavira) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1956-01-26T17:36:40.613760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1956-08-14.0000000 |
| e |
1.00460292 |
| q (au) |
4.076984 |
| a (au) |
-885.738904 |
| i (deg) |
79.600837 |
| Ω (om, deg) |
72.875012 |
| ω (w, deg) |
57.309578 |
| M (ma, deg) |
0.007488 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
16:57:36.58 |
-55:25:45.1 |
HIP 82991 |
25.36 |
| 2026-06-01 12:00 |
16:57:34.36 |
-55:25:45.0 |
HIP 82991 |
25.36 |
| 2026-06-02 00:00 |
16:57:32.13 |
-55:25:44.8 |
HIP 82991 |
25.36 |
| 2026-06-02 12:00 |
16:57:29.91 |
-55:25:44.6 |
HIP 82991 |
25.37 |
| 2026-06-03 00:00 |
16:57:27.68 |
-55:25:44.2 |
HIP 82991 |
25.39 |
| 2026-06-03 12:00 |
16:57:25.46 |
-55:25:43.7 |
HIP 82991 |
25.41 |
| 2026-06-04 00:00 |
16:57:23.23 |
-55:25:43.2 |
HIP 82991 |
25.43 |
| 2026-06-04 12:00 |
16:57:21.00 |
-55:25:42.5 |
HIP 82991 |
25.47 |
| 2026-06-05 00:00 |
16:57:18.77 |
-55:25:41.8 |
HIP 82991 |
25.50 |
| 2026-06-05 12:00 |
16:57:16.54 |
-55:25:41.0 |
HIP 82991 |
25.55 |
| 2026-06-06 00:00 |
16:57:14.31 |
-55:25:40.1 |
HIP 82991 |
25.59 |
| 2026-06-06 12:00 |
16:57:12.08 |
-55:25:39.1 |
HIP 82991 |
25.65 |
| 2026-06-07 00:00 |
16:57:09.85 |
-55:25:38.0 |
HIP 82991 |
25.70 |
| 2026-06-07 12:00 |
16:57:07.62 |
-55:25:36.8 |
HIP 82991 |
25.77 |
| 2026-06-08 00:00 |
16:57:05.39 |
-55:25:35.5 |
HIP 82991 |
25.84 |
| 2026-06-08 12:00 |
16:57:03.16 |
-55:25:34.1 |
HIP 82991 |
25.91 |
| 2026-06-09 00:00 |
16:57:00.93 |
-55:25:32.7 |
HIP 82991 |
25.99 |
| 2026-06-09 12:00 |
16:56:58.70 |
-55:25:31.1 |
HIP 82991 |
26.07 |
| 2026-06-10 00:00 |
16:56:56.47 |
-55:25:29.5 |
HIP 82991 |
26.16 |
| 2026-06-10 12:00 |
16:56:54.25 |
-55:25:27.8 |
HIP 82991 |
26.26 |
| 2026-06-11 00:00 |
16:56:52.02 |
-55:25:26.0 |
HIP 82991 |
26.35 |
| 2026-06-11 12:00 |
16:56:49.80 |
-55:25:24.1 |
HIP 82991 |
26.46 |
| 2026-06-12 00:00 |
16:56:47.58 |
-55:25:22.1 |
HIP 82991 |
26.57 |
| 2026-06-12 12:00 |
16:56:45.36 |
-55:25:20.0 |
HIP 82991 |
26.68 |
| 2026-06-13 00:00 |
16:56:43.14 |
-55:25:17.8 |
HIP 82991 |
26.80 |
| 2026-06-13 12:00 |
16:56:40.92 |
-55:25:15.6 |
HIP 82991 |
26.92 |
| 2026-06-14 00:00 |
16:56:38.71 |
-55:25:13.2 |
HIP 82991 |
27.04 |
| 2026-06-14 12:00 |
16:56:36.50 |
-55:25:10.8 |
HIP 82991 |
27.18 |
| 2026-06-15 00:00 |
16:56:34.29 |
-55:25:08.3 |
HIP 82991 |
27.31 |
| 2026-06-15 12:00 |
16:56:32.08 |
-55:25:05.6 |
HIP 82991 |
27.45 |
| 2026-06-16 00:00 |
16:56:29.88 |
-55:25:02.9 |
HIP 82991 |
27.59 |
| 2026-06-16 12:00 |
16:56:27.68 |
-55:25:00.2 |
HIP 82991 |
27.74 |
| 2026-06-17 00:00 |
16:56:25.48 |
-55:24:57.3 |
HIP 82991 |
27.89 |
| 2026-06-17 12:00 |
16:56:23.29 |
-55:24:54.3 |
HIP 82991 |
28.05 |
| 2026-06-18 00:00 |
16:56:21.10 |
-55:24:51.3 |
HIP 82991 |
28.21 |
| 2026-06-18 12:00 |
16:56:18.92 |
-55:24:48.2 |
HIP 82991 |
28.37 |
| 2026-06-19 00:00 |
16:56:16.74 |
-55:24:45.0 |
HIP 82991 |
28.53 |
| 2026-06-19 12:00 |
16:56:14.56 |
-55:24:41.7 |
HIP 82663 |
28.40 |
| 2026-06-20 00:00 |
16:56:12.39 |
-55:24:38.3 |
HIP 82663 |
28.15 |
| 2026-06-20 12:00 |
16:56:10.22 |
-55:24:34.8 |
HIP 82663 |
27.89 |
| 2026-06-21 00:00 |
16:56:08.06 |
-55:24:31.2 |
HIP 82663 |
27.64 |
| 2026-06-21 12:00 |
16:56:05.90 |
-55:24:27.6 |
HIP 82663 |
27.38 |
| 2026-06-22 00:00 |
16:56:03.75 |
-55:24:23.9 |
HIP 82663 |
27.13 |