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) |
| 2026-06-01 00:00 |
19:01:06.86 |
-06:11:05.6 |
HIP 93411 |
5.10 |
| 2026-06-01 12:00 |
19:01:05.40 |
-06:11:03.5 |
HIP 93411 |
5.47 |
| 2026-06-02 00:00 |
19:01:03.93 |
-06:11:01.6 |
HIP 93411 |
5.83 |
| 2026-06-02 12:00 |
19:01:02.46 |
-06:10:59.7 |
HIP 93411 |
6.20 |
| 2026-06-03 00:00 |
19:01:00.97 |
-06:10:57.8 |
HIP 93411 |
6.57 |
| 2026-06-03 12:00 |
19:00:59.48 |
-06:10:56.1 |
HIP 93411 |
6.94 |
| 2026-06-04 00:00 |
19:00:57.98 |
-06:10:54.4 |
HIP 93411 |
7.32 |
| 2026-06-04 12:00 |
19:00:56.47 |
-06:10:52.7 |
HIP 93411 |
7.69 |
| 2026-06-05 00:00 |
19:00:54.96 |
-06:10:51.1 |
HIP 93411 |
8.07 |
| 2026-06-05 12:00 |
19:00:53.43 |
-06:10:49.6 |
HIP 93411 |
8.45 |
| 2026-06-06 00:00 |
19:00:51.90 |
-06:10:48.2 |
HIP 93411 |
8.83 |
| 2026-06-06 12:00 |
19:00:50.37 |
-06:10:46.8 |
HIP 93411 |
9.22 |
| 2026-06-07 00:00 |
19:00:48.82 |
-06:10:45.5 |
HIP 93411 |
9.60 |
| 2026-06-07 12:00 |
19:00:47.27 |
-06:10:44.3 |
HIP 93411 |
9.99 |
| 2026-06-08 00:00 |
19:00:45.71 |
-06:10:43.1 |
HIP 93411 |
10.37 |
| 2026-06-08 12:00 |
19:00:44.14 |
-06:10:42.0 |
HIP 93411 |
10.76 |
| 2026-06-09 00:00 |
19:00:42.57 |
-06:10:40.9 |
HIP 93411 |
11.16 |
| 2026-06-09 12:00 |
19:00:40.98 |
-06:10:40.0 |
HIP 93411 |
11.55 |
| 2026-06-10 00:00 |
19:00:39.40 |
-06:10:39.1 |
HIP 93411 |
11.94 |
| 2026-06-10 12:00 |
19:00:37.80 |
-06:10:38.2 |
HIP 93411 |
12.34 |
| 2026-06-11 00:00 |
19:00:36.20 |
-06:10:37.5 |
HIP 93411 |
12.74 |
| 2026-06-11 12:00 |
19:00:34.60 |
-06:10:36.8 |
HIP 93411 |
13.14 |
| 2026-06-12 00:00 |
19:00:32.98 |
-06:10:36.1 |
HIP 93411 |
13.54 |
| 2026-06-12 12:00 |
19:00:31.36 |
-06:10:35.5 |
HIP 93411 |
13.94 |
| 2026-06-13 00:00 |
19:00:29.74 |
-06:10:35.0 |
HIP 93411 |
14.34 |
| 2026-06-13 12:00 |
19:00:28.11 |
-06:10:34.6 |
HIP 93411 |
14.75 |
| 2026-06-14 00:00 |
19:00:26.47 |
-06:10:34.3 |
HIP 93411 |
15.15 |
| 2026-06-14 12:00 |
19:00:24.83 |
-06:10:34.0 |
HIP 93411 |
15.56 |
| 2026-06-15 00:00 |
19:00:23.18 |
-06:10:33.7 |
HIP 93411 |
15.97 |
| 2026-06-15 12:00 |
19:00:21.52 |
-06:10:33.6 |
HIP 93411 |
16.38 |
| 2026-06-16 00:00 |
19:00:19.87 |
-06:10:33.5 |
HIP 93411 |
16.79 |
| 2026-06-16 12:00 |
19:00:18.20 |
-06:10:33.5 |
HIP 93411 |
17.21 |
| 2026-06-17 00:00 |
19:00:16.53 |
-06:10:33.5 |
HIP 93411 |
17.62 |
| 2026-06-17 12:00 |
19:00:14.86 |
-06:10:33.6 |
HIP 93411 |
18.03 |
| 2026-06-18 00:00 |
19:00:13.18 |
-06:10:33.8 |
HIP 93411 |
18.45 |
| 2026-06-18 12:00 |
19:00:11.50 |
-06:10:34.0 |
HIP 93411 |
18.87 |
| 2026-06-19 00:00 |
19:00:09.81 |
-06:10:34.4 |
HIP 93411 |
19.29 |
| 2026-06-19 12:00 |
19:00:08.12 |
-06:10:34.7 |
HIP 93411 |
19.71 |
| 2026-06-20 00:00 |
19:00:06.43 |
-06:10:35.2 |
HIP 93411 |
20.13 |
| 2026-06-20 12:00 |
19:00:04.73 |
-06:10:35.7 |
HIP 93411 |
20.55 |
| 2026-06-21 00:00 |
19:00:03.02 |
-06:10:36.3 |
HIP 93411 |
20.97 |
| 2026-06-21 12:00 |
19:00:01.32 |
-06:10:36.9 |
HIP 93411 |
21.39 |
| 2026-06-22 00:00 |
18:59:59.61 |
-06:10:37.7 |
HIP 93411 |
21.82 |