메타데이터
| 항목 |
값 |
| Designation |
C/1993 A1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1994-01-12T21:38:07.189440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:43Z |
| Obs used |
714 |
| NEO |
- |
| M1 |
8.100 |
| K1 |
4.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1993-08-20.0000000 |
| e |
1.00184088 |
| q (au) |
1.937455 |
| a (au) |
-1052.462705 |
| i (deg) |
124.878071 |
| Ω (om, deg) |
144.720539 |
| ω (w, deg) |
130.666066 |
| M (ma, deg) |
-0.004212 |
밝기
산란 + 전체 선형
$$
M_a = (5.190 + 3.446\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.190 |
| n |
3.446 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.989 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1992-11-26 |
1993-08-06 |
+1.7238 |
-0.931 |
| 1993-08-06 |
1994-01-12 |
-3.7755 |
+1.282 |
| 1994-01-13 |
1994-07-15 |
+9.6590 |
-2.801 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
11:25:38.27 |
-53:32:37.1 |
HIP 55849 |
25.22 |
| 2026-07-29 12:00 |
11:25:40.53 |
-53:32:22.4 |
HIP 55849 |
24.86 |
| 2026-07-30 00:00 |
11:25:42.81 |
-53:32:08.0 |
HIP 55849 |
24.50 |
| 2026-07-30 12:00 |
11:25:45.10 |
-53:31:53.7 |
HIP 55849 |
24.15 |
| 2026-07-31 00:00 |
11:25:47.42 |
-53:31:39.6 |
HIP 55849 |
23.81 |
| 2026-07-31 12:00 |
11:25:49.75 |
-53:31:25.8 |
HIP 55849 |
23.46 |
| 2026-08-01 00:00 |
11:25:52.10 |
-53:31:12.1 |
HIP 55849 |
23.12 |
| 2026-08-01 12:00 |
11:25:54.47 |
-53:30:58.7 |
HIP 55849 |
22.79 |
| 2026-08-02 00:00 |
11:25:56.85 |
-53:30:45.4 |
HIP 55849 |
22.46 |
| 2026-08-02 12:00 |
11:25:59.25 |
-53:30:32.4 |
HIP 55849 |
22.14 |
| 2026-08-03 00:00 |
11:26:01.67 |
-53:30:19.5 |
HIP 55849 |
21.82 |
| 2026-08-03 12:00 |
11:26:04.11 |
-53:30:06.9 |
HIP 55849 |
21.51 |
| 2026-08-04 00:00 |
11:26:06.56 |
-53:29:54.4 |
HIP 55849 |
21.20 |
| 2026-08-04 12:00 |
11:26:09.03 |
-53:29:42.2 |
HIP 55849 |
20.90 |
| 2026-08-05 00:00 |
11:26:11.51 |
-53:29:30.2 |
HIP 55849 |
20.61 |
| 2026-08-05 12:00 |
11:26:14.02 |
-53:29:18.4 |
HIP 55849 |
20.33 |
| 2026-08-06 00:00 |
11:26:16.53 |
-53:29:06.8 |
HIP 55849 |
20.05 |
| 2026-08-06 12:00 |
11:26:19.07 |
-53:28:55.4 |
HIP 55849 |
19.78 |
| 2026-08-07 00:00 |
11:26:21.61 |
-53:28:44.2 |
HIP 55849 |
19.52 |
| 2026-08-07 12:00 |
11:26:24.18 |
-53:28:33.3 |
HIP 55849 |
19.27 |
| 2026-08-08 00:00 |
11:26:26.76 |
-53:28:22.5 |
HIP 55849 |
19.03 |
| 2026-08-08 12:00 |
11:26:29.35 |
-53:28:12.0 |
HIP 55849 |
18.79 |
| 2026-08-09 00:00 |
11:26:31.96 |
-53:28:01.6 |
HIP 55849 |
18.57 |
| 2026-08-09 12:00 |
11:26:34.59 |
-53:27:51.5 |
HIP 55849 |
18.36 |
| 2026-08-10 00:00 |
11:26:37.23 |
-53:27:41.6 |
HIP 55849 |
18.16 |
| 2026-08-10 12:00 |
11:26:39.88 |
-53:27:32.0 |
HIP 55849 |
17.97 |
| 2026-08-11 00:00 |
11:26:42.55 |
-53:27:22.5 |
HIP 55849 |
17.79 |
| 2026-08-11 12:00 |
11:26:45.23 |
-53:27:13.3 |
HIP 55849 |
17.63 |
| 2026-08-12 00:00 |
11:26:47.92 |
-53:27:04.2 |
HIP 55849 |
17.47 |
| 2026-08-12 12:00 |
11:26:50.63 |
-53:26:55.4 |
HIP 55849 |
17.33 |
| 2026-08-13 00:00 |
11:26:53.36 |
-53:26:46.8 |
HIP 55849 |
17.21 |
| 2026-08-13 12:00 |
11:26:56.09 |
-53:26:38.5 |
HIP 55849 |
17.09 |
| 2026-08-14 00:00 |
11:26:58.84 |
-53:26:30.3 |
HIP 55849 |
17.00 |
| 2026-08-14 12:00 |
11:27:01.60 |
-53:26:22.4 |
HIP 55849 |
16.91 |
| 2026-08-15 00:00 |
11:27:04.38 |
-53:26:14.7 |
HIP 55849 |
16.84 |
| 2026-08-15 12:00 |
11:27:07.17 |
-53:26:07.2 |
HIP 55849 |
16.79 |
| 2026-08-16 00:00 |
11:27:09.97 |
-53:26:00.0 |
HIP 55849 |
16.75 |
| 2026-08-16 12:00 |
11:27:12.78 |
-53:25:52.9 |
HIP 55849 |
16.72 |
| 2026-08-17 00:00 |
11:27:15.60 |
-53:25:46.1 |
HIP 55849 |
16.71 |
| 2026-08-17 12:00 |
11:27:18.44 |
-53:25:39.5 |
HIP 55849 |
16.72 |
| 2026-08-18 00:00 |
11:27:21.28 |
-53:25:33.1 |
HIP 56041 |
16.65 |
| 2026-08-18 12:00 |
11:27:24.14 |
-53:25:27.0 |
HIP 56041 |
16.22 |
| 2026-08-19 00:00 |
11:27:27.01 |
-53:25:21.0 |
HIP 56041 |
15.78 |