C/1998 K1 (Mueller)
메타데이터
| 항목 |
값 |
| Designation |
C/1998 K1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-09-01T00:55:41.113920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:53Z |
| Obs used |
171 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-06-05.0000000 |
| e |
0.94515162 |
| q (au) |
3.416610 |
| a (au) |
62.291906 |
| i (deg) |
35.636035 |
| Ω (om, deg) |
18.256263 |
| ω (w, deg) |
165.250246 |
| M (ma, deg) |
359.823506 |
밝기
산란 + 전체 선형
$$
M_a = (4.128 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.128 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| 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) |
| 2026-02-03 00:00 |
23:31:36.71 |
-27:10:55.3 |
HIP 116152 |
5.88 |
| 2026-02-03 12:00 |
23:31:39.00 |
-27:10:31.7 |
HIP 116152 |
5.25 |
| 2026-02-04 00:00 |
23:31:41.31 |
-27:10:08.1 |
HIP 116152 |
4.62 |
| 2026-02-04 12:00 |
23:31:43.62 |
-27:09:44.5 |
HIP 116152 |
4.00 |
| 2026-02-05 00:00 |
23:31:45.96 |
-27:09:21.0 |
HIP 116152 |
3.38 |
| 2026-02-05 12:00 |
23:31:48.30 |
-27:08:57.5 |
HIP 116152 |
2.78 |
| 2026-02-06 00:00 |
23:31:50.66 |
-27:08:34.1 |
HIP 116152 |
2.20 |
| 2026-02-06 12:00 |
23:31:53.03 |
-27:08:10.7 |
HIP 116152 |
1.68 |
| 2026-02-07 00:00 |
23:31:55.42 |
-27:07:47.4 |
HIP 116152 |
1.28 |
| 2026-02-07 12:00 |
23:31:57.82 |
-27:07:24.1 |
HIP 116152 |
1.15 |
| 2026-02-08 00:00 |
23:32:00.23 |
-27:07:00.8 |
HIP 116152 |
1.37 |
| 2026-02-08 12:00 |
23:32:02.66 |
-27:06:37.6 |
HIP 116152 |
1.82 |
| 2026-02-09 00:00 |
23:32:05.09 |
-27:06:14.5 |
HIP 116152 |
2.37 |
| 2026-02-09 12:00 |
23:32:07.54 |
-27:05:51.4 |
HIP 116152 |
2.97 |
| 2026-02-10 00:00 |
23:32:10.01 |
-27:05:28.4 |
HIP 116152 |
3.59 |
| 2026-02-10 12:00 |
23:32:12.48 |
-27:05:05.4 |
HIP 116152 |
4.23 |
| 2026-02-11 00:00 |
23:32:14.97 |
-27:04:42.5 |
HIP 116152 |
4.88 |
| 2026-02-11 12:00 |
23:32:17.46 |
-27:04:19.7 |
HIP 116152 |
5.53 |
| 2026-02-12 00:00 |
23:32:19.97 |
-27:03:56.9 |
HIP 116152 |
6.19 |
| 2026-02-12 12:00 |
23:32:22.49 |
-27:03:34.1 |
HIP 116152 |
6.86 |
| 2026-02-13 00:00 |
23:32:25.02 |
-27:03:11.5 |
HIP 116152 |
7.53 |
| 2026-02-13 12:00 |
23:32:27.56 |
-27:02:48.9 |
HIP 116152 |
8.20 |
| 2026-02-14 00:00 |
23:32:30.12 |
-27:02:26.3 |
HIP 116152 |
8.87 |
| 2026-02-14 12:00 |
23:32:32.68 |
-27:02:03.9 |
HIP 116152 |
9.55 |
| 2026-02-15 00:00 |
23:32:35.26 |
-27:01:41.5 |
HIP 116152 |
10.22 |
| 2026-02-15 12:00 |
23:32:37.84 |
-27:01:19.2 |
HIP 116152 |
10.90 |
| 2026-02-16 00:00 |
23:32:40.43 |
-27:00:56.9 |
HIP 116152 |
11.58 |
| 2026-02-16 12:00 |
23:32:43.04 |
-27:00:34.7 |
HIP 116152 |
12.26 |
| 2026-02-17 00:00 |
23:32:45.65 |
-27:00:12.7 |
HIP 116152 |
12.95 |
| 2026-02-17 12:00 |
23:32:48.27 |
-26:59:50.6 |
HIP 116152 |
13.63 |
| 2026-02-18 00:00 |
23:32:50.91 |
-26:59:28.7 |
HIP 116152 |
14.32 |
| 2026-02-18 12:00 |
23:32:53.55 |
-26:59:06.8 |
HIP 116152 |
15.01 |
| 2026-02-19 00:00 |
23:32:56.20 |
-26:58:45.1 |
HIP 116152 |
15.70 |
| 2026-02-19 12:00 |
23:32:58.86 |
-26:58:23.4 |
HIP 116152 |
16.38 |
| 2026-02-20 00:00 |
23:33:01.52 |
-26:58:01.8 |
HIP 116152 |
17.08 |
| 2026-02-20 12:00 |
23:33:04.20 |
-26:57:40.3 |
HIP 116152 |
17.77 |
| 2026-02-21 00:00 |
23:33:06.88 |
-26:57:18.8 |
HIP 116152 |
18.46 |
| 2026-02-21 12:00 |
23:33:09.57 |
-26:56:57.5 |
HIP 116152 |
19.15 |
| 2026-02-22 00:00 |
23:33:12.27 |
-26:56:36.3 |
HIP 116152 |
19.85 |
| 2026-02-22 12:00 |
23:33:14.98 |
-26:56:15.1 |
HIP 116152 |
20.54 |
| 2026-02-23 00:00 |
23:33:17.69 |
-26:55:54.0 |
HIP 116152 |
21.24 |
| 2026-02-23 12:00 |
23:33:20.41 |
-26:55:33.1 |
HIP 116376 |
20.98 |
| 2026-02-24 00:00 |
23:33:23.14 |
-26:55:12.2 |
HIP 116376 |
20.38 |