메타데이터
| 항목 |
값 |
| Designation |
C/1985 K1 (Machholz) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1985-06-28T17:43:33.605760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:31Z |
| Obs used |
30 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1985-06-19.0000000 |
| e |
1.00000000 |
| q (au) |
0.106250 |
| a (au) |
- |
| i (deg) |
16.276479 |
| Ω (om, deg) |
195.434274 |
| ω (w, deg) |
274.501133 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (9.225 + 3.309\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.225 |
| n |
3.309 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
18:57:51.89 |
-06:14:27.1 |
HIP 93026 |
26.54 |
| 2026-07-29 12:00 |
18:57:50.27 |
-06:14:32.4 |
HIP 93026 |
26.44 |
| 2026-07-30 00:00 |
18:57:48.65 |
-06:14:37.7 |
HIP 93026 |
26.35 |
| 2026-07-30 12:00 |
18:57:47.05 |
-06:14:43.1 |
HIP 93026 |
26.27 |
| 2026-07-31 00:00 |
18:57:45.45 |
-06:14:48.5 |
HIP 93026 |
26.19 |
| 2026-07-31 12:00 |
18:57:43.85 |
-06:14:53.9 |
HIP 93026 |
26.12 |
| 2026-08-01 00:00 |
18:57:42.26 |
-06:14:59.5 |
HIP 93026 |
26.05 |
| 2026-08-01 12:00 |
18:57:40.68 |
-06:15:05.0 |
HIP 93026 |
26.00 |
| 2026-08-02 00:00 |
18:57:39.11 |
-06:15:10.6 |
HIP 93026 |
25.95 |
| 2026-08-02 12:00 |
18:57:37.54 |
-06:15:16.3 |
HIP 93026 |
25.91 |
| 2026-08-03 00:00 |
18:57:35.98 |
-06:15:21.9 |
HIP 93026 |
25.87 |
| 2026-08-03 12:00 |
18:57:34.42 |
-06:15:27.7 |
HIP 93026 |
25.85 |
| 2026-08-04 00:00 |
18:57:32.88 |
-06:15:33.5 |
HIP 93026 |
25.83 |
| 2026-08-04 12:00 |
18:57:31.34 |
-06:15:39.3 |
HIP 93026 |
25.82 |
| 2026-08-05 00:00 |
18:57:29.80 |
-06:15:45.2 |
HIP 93026 |
25.81 |
| 2026-08-05 12:00 |
18:57:28.28 |
-06:15:51.1 |
HIP 93026 |
25.82 |
| 2026-08-06 00:00 |
18:57:26.76 |
-06:15:57.1 |
HIP 93026 |
25.83 |
| 2026-08-06 12:00 |
18:57:25.25 |
-06:16:03.1 |
HIP 93026 |
25.84 |
| 2026-08-07 00:00 |
18:57:23.75 |
-06:16:09.1 |
HIP 93026 |
25.87 |
| 2026-08-07 12:00 |
18:57:22.25 |
-06:16:15.2 |
HIP 93026 |
25.90 |
| 2026-08-08 00:00 |
18:57:20.77 |
-06:16:21.4 |
HIP 93026 |
25.94 |
| 2026-08-08 12:00 |
18:57:19.29 |
-06:16:27.5 |
HIP 93026 |
25.98 |
| 2026-08-09 00:00 |
18:57:17.82 |
-06:16:33.8 |
HIP 93026 |
26.03 |
| 2026-08-09 12:00 |
18:57:16.36 |
-06:16:40.0 |
HIP 93026 |
26.09 |
| 2026-08-10 00:00 |
18:57:14.90 |
-06:16:46.3 |
HIP 93026 |
26.15 |
| 2026-08-10 12:00 |
18:57:13.46 |
-06:16:52.7 |
HIP 93026 |
26.22 |
| 2026-08-11 00:00 |
18:57:12.02 |
-06:16:59.1 |
HIP 93026 |
26.29 |
| 2026-08-11 12:00 |
18:57:10.60 |
-06:17:05.5 |
HIP 93026 |
26.38 |
| 2026-08-12 00:00 |
18:57:09.18 |
-06:17:12.0 |
HIP 93026 |
26.46 |
| 2026-08-12 12:00 |
18:57:07.77 |
-06:17:18.5 |
HIP 93026 |
26.55 |
| 2026-08-13 00:00 |
18:57:06.37 |
-06:17:25.0 |
HIP 93026 |
26.65 |
| 2026-08-13 12:00 |
18:57:04.98 |
-06:17:31.6 |
HIP 93026 |
26.76 |
| 2026-08-14 00:00 |
18:57:03.60 |
-06:17:38.2 |
HIP 93026 |
26.86 |
| 2026-08-14 12:00 |
18:57:02.23 |
-06:17:44.9 |
HIP 93026 |
26.98 |
| 2026-08-15 00:00 |
18:57:00.87 |
-06:17:51.5 |
HIP 93026 |
27.09 |
| 2026-08-15 12:00 |
18:56:59.52 |
-06:17:58.3 |
HIP 93026 |
27.22 |
| 2026-08-16 00:00 |
18:56:58.17 |
-06:18:05.0 |
HIP 93026 |
27.34 |
| 2026-08-16 12:00 |
18:56:56.84 |
-06:18:11.8 |
HIP 93026 |
27.48 |
| 2026-08-17 00:00 |
18:56:55.52 |
-06:18:18.6 |
HIP 93026 |
27.61 |
| 2026-08-17 12:00 |
18:56:54.21 |
-06:18:25.5 |
HIP 93026 |
27.75 |
| 2026-08-18 00:00 |
18:56:52.91 |
-06:18:32.4 |
HIP 93026 |
27.89 |
| 2026-08-18 12:00 |
18:56:51.62 |
-06:18:39.3 |
HIP 93026 |
28.04 |
| 2026-08-19 00:00 |
18:56:50.33 |
-06:18:46.3 |
HIP 93026 |
28.19 |