메타데이터
| 항목 |
값 |
| Designation |
C/1948 E1 (Pajdusakova-Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1948-05-16T15:18:31.078080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
12 |
| NEO |
- |
| M1 |
5.300 |
| K1 |
12.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1949-03-06.0000000 |
| e |
1.00093013 |
| q (au) |
2.107136 |
| a (au) |
-2265.428601 |
| i (deg) |
92.917661 |
| Ω (om, deg) |
247.655064 |
| ω (w, deg) |
66.906940 |
| M (ma, deg) |
0.002682 |
밝기
산란 + 전체 선형
$$
M_a = (2.842 + 5.735\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.842 |
| n |
5.735 |
| gf |
0.996 |
| gb |
-0.682 |
| k |
0.981 |
| δ90 |
9.995 |
| 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) |
| 2026-05-12 00:00 |
04:45:06.28 |
-27:55:45.3 |
HIP 22046 |
8.30 |
| 2026-05-12 12:00 |
04:45:07.49 |
-27:55:39.3 |
HIP 22046 |
8.58 |
| 2026-05-13 00:00 |
04:45:08.70 |
-27:55:33.4 |
HIP 22046 |
8.85 |
| 2026-05-13 12:00 |
04:45:09.91 |
-27:55:27.6 |
HIP 22046 |
9.13 |
| 2026-05-14 00:00 |
04:45:11.13 |
-27:55:21.9 |
HIP 22046 |
9.42 |
| 2026-05-14 12:00 |
04:45:12.35 |
-27:55:16.3 |
HIP 22046 |
9.70 |
| 2026-05-15 00:00 |
04:45:13.58 |
-27:55:10.8 |
HIP 22046 |
9.98 |
| 2026-05-15 12:00 |
04:45:14.81 |
-27:55:05.4 |
HIP 22046 |
10.26 |
| 2026-05-16 00:00 |
04:45:16.04 |
-27:55:00.1 |
HIP 22046 |
10.55 |
| 2026-05-16 12:00 |
04:45:17.27 |
-27:54:54.9 |
HIP 22046 |
10.83 |
| 2026-05-17 00:00 |
04:45:18.51 |
-27:54:49.8 |
HIP 22046 |
11.12 |
| 2026-05-17 12:00 |
04:45:19.76 |
-27:54:44.9 |
HIP 22046 |
11.40 |
| 2026-05-18 00:00 |
04:45:21.00 |
-27:54:40.0 |
HIP 22046 |
11.69 |
| 2026-05-18 12:00 |
04:45:22.25 |
-27:54:35.2 |
HIP 22046 |
11.97 |
| 2026-05-19 00:00 |
04:45:23.50 |
-27:54:30.6 |
HIP 22046 |
12.26 |
| 2026-05-19 12:00 |
04:45:24.75 |
-27:54:26.0 |
HIP 22046 |
12.55 |
| 2026-05-20 00:00 |
04:45:26.01 |
-27:54:21.6 |
HIP 22046 |
12.83 |
| 2026-05-20 12:00 |
04:45:27.27 |
-27:54:17.2 |
HIP 22046 |
13.12 |
| 2026-05-21 00:00 |
04:45:28.53 |
-27:54:13.0 |
HIP 22046 |
13.41 |
| 2026-05-21 12:00 |
04:45:29.79 |
-27:54:08.9 |
HIP 22046 |
13.69 |
| 2026-05-22 00:00 |
04:45:31.06 |
-27:54:04.9 |
HIP 22046 |
13.98 |
| 2026-05-22 12:00 |
04:45:32.33 |
-27:54:01.0 |
HIP 22046 |
14.27 |
| 2026-05-23 00:00 |
04:45:33.60 |
-27:53:57.2 |
HIP 22046 |
14.56 |
| 2026-05-23 12:00 |
04:45:34.87 |
-27:53:53.5 |
HIP 22046 |
14.84 |
| 2026-05-24 00:00 |
04:45:36.15 |
-27:53:49.9 |
HIP 22046 |
15.13 |
| 2026-05-24 12:00 |
04:45:37.42 |
-27:53:46.4 |
HIP 22046 |
15.42 |
| 2026-05-25 00:00 |
04:45:38.70 |
-27:53:43.0 |
HIP 22192 |
15.52 |
| 2026-05-25 12:00 |
04:45:39.98 |
-27:53:39.8 |
HIP 22192 |
15.37 |
| 2026-05-26 00:00 |
04:45:41.26 |
-27:53:36.6 |
HIP 22192 |
15.23 |
| 2026-05-26 12:00 |
04:45:42.54 |
-27:53:33.6 |
HIP 22192 |
15.09 |
| 2026-05-27 00:00 |
04:45:43.83 |
-27:53:30.7 |
HIP 22192 |
14.95 |
| 2026-05-27 12:00 |
04:45:45.11 |
-27:53:27.8 |
HIP 22192 |
14.81 |
| 2026-05-28 00:00 |
04:45:46.40 |
-27:53:25.1 |
HIP 22192 |
14.68 |
| 2026-05-28 12:00 |
04:45:47.69 |
-27:53:22.5 |
HIP 22192 |
14.55 |
| 2026-05-29 00:00 |
04:45:48.98 |
-27:53:20.0 |
HIP 22192 |
14.42 |
| 2026-05-29 12:00 |
04:45:50.27 |
-27:53:17.6 |
HIP 22192 |
14.29 |
| 2026-05-30 00:00 |
04:45:51.56 |
-27:53:15.4 |
HIP 22192 |
14.17 |
| 2026-05-30 12:00 |
04:45:52.85 |
-27:53:13.2 |
HIP 22192 |
14.05 |
| 2026-05-31 00:00 |
04:45:54.14 |
-27:53:11.2 |
HIP 22192 |
13.94 |
| 2026-05-31 12:00 |
04:45:55.44 |
-27:53:09.2 |
HIP 22192 |
13.82 |
| 2026-06-01 00:00 |
04:45:56.73 |
-27:53:07.4 |
HIP 22192 |
13.71 |
| 2026-06-01 12:00 |
04:45:58.02 |
-27:53:05.7 |
HIP 22192 |
13.61 |
| 2026-06-02 00:00 |
04:45:59.32 |
-27:53:04.1 |
HIP 22192 |
13.51 |