메타데이터
| 항목 |
값 |
| Designation |
134P/Kowal-Vavrova |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-05-21T10:44:38.575680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:27:38Z |
| Obs used |
1061 |
| NEO |
- |
| M1 |
5.300 |
| K1 |
21.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-07-03.0000000 |
| e |
0.58715335 |
| q (au) |
2.571725 |
| a (au) |
6.229249 |
| i (deg) |
4.348711 |
| Ω (om, deg) |
202.123430 |
| ω (w, deg) |
18.560225 |
| M (ma, deg) |
339.558643 |
밝기
산란 + 전체 선형
$$
M_a = (8.233 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.233 |
| n |
6.000 |
| gf |
0.888 |
| gb |
-0.500 |
| k |
0.907 |
| δ90 |
1.569 |
| 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 |
| 2013-01-17 |
2013-08-04 |
+16.7678 |
-10.380 |
| 2013-08-04 |
2014-05-21 |
-10.4881 |
+4.217 |
| 2014-05-21 |
2015-09-08 |
+8.7935 |
-3.959 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
04:52:34.65 |
+19:20:12.3 |
HIP 22623 |
9.74 |
| 2026-05-12 12:00 |
04:52:51.18 |
+19:20:41.8 |
HIP 22623 |
13.19 |
| 2026-05-13 00:00 |
04:53:07.76 |
+19:21:11.1 |
HIP 22623 |
16.86 |
| 2026-05-13 12:00 |
04:53:24.37 |
+19:21:40.3 |
HIP 22745 |
17.50 |
| 2026-05-14 00:00 |
04:53:41.03 |
+19:22:09.4 |
HIP 22745 |
17.83 |
| 2026-05-14 12:00 |
04:53:57.73 |
+19:22:38.4 |
HIP 22850 |
15.69 |
| 2026-05-15 00:00 |
04:54:14.47 |
+19:23:07.3 |
HIP 22850 |
11.96 |
| 2026-05-15 12:00 |
04:54:31.25 |
+19:23:36.0 |
HIP 22850 |
8.44 |
| 2026-05-16 00:00 |
04:54:48.06 |
+19:24:04.6 |
HIP 22850 |
5.60 |
| 2026-05-16 12:00 |
04:55:04.92 |
+19:24:33.1 |
HIP 22850 |
4.83 |
| 2026-05-17 00:00 |
04:55:21.81 |
+19:25:01.4 |
HIP 22850 |
6.89 |
| 2026-05-17 12:00 |
04:55:38.74 |
+19:25:29.6 |
HIP 22850 |
10.20 |
| 2026-05-18 00:00 |
04:55:55.71 |
+19:25:57.7 |
HIP 22850 |
13.89 |
| 2026-05-18 12:00 |
04:56:12.71 |
+19:26:25.6 |
HIP 22850 |
17.74 |
| 2026-05-19 00:00 |
04:56:29.74 |
+19:26:53.4 |
HIP 22850 |
21.66 |
| 2026-05-19 12:00 |
04:56:46.81 |
+19:27:21.0 |
HIP 22850 |
25.63 |
| 2026-05-20 00:00 |
04:57:03.91 |
+19:27:48.5 |
HIP 22850 |
29.63 |
| 2026-05-20 12:00 |
04:57:21.04 |
+19:28:15.9 |
HIP 23178 |
30.38 |
| 2026-05-21 00:00 |
04:57:38.21 |
+19:28:43.1 |
HIP 23178 |
26.80 |
| 2026-05-21 12:00 |
04:57:55.41 |
+19:29:10.2 |
HIP 23178 |
23.37 |
| 2026-05-22 00:00 |
04:58:12.63 |
+19:29:37.1 |
HIP 23178 |
20.19 |
| 2026-05-22 12:00 |
04:58:29.89 |
+19:30:03.8 |
HIP 23178 |
17.39 |
| 2026-05-23 00:00 |
04:58:47.17 |
+19:30:30.4 |
HIP 23178 |
15.18 |
| 2026-05-23 12:00 |
04:59:04.49 |
+19:30:56.9 |
HIP 23178 |
13.86 |
| 2026-05-24 00:00 |
04:59:21.83 |
+19:31:23.2 |
HIP 23178 |
13.69 |
| 2026-05-24 12:00 |
04:59:39.19 |
+19:31:49.3 |
HIP 23178 |
14.72 |
| 2026-05-25 00:00 |
04:59:56.59 |
+19:32:15.3 |
HIP 23178 |
16.74 |
| 2026-05-25 12:00 |
05:00:14.01 |
+19:32:41.1 |
HIP 23178 |
19.43 |
| 2026-05-26 00:00 |
05:00:31.45 |
+19:33:06.8 |
HIP 23178 |
22.57 |
| 2026-05-26 12:00 |
05:00:48.92 |
+19:33:32.3 |
HIP 23356 |
23.58 |
| 2026-05-27 00:00 |
05:01:06.42 |
+19:33:57.6 |
HIP 23356 |
22.16 |
| 2026-05-27 12:00 |
05:01:23.94 |
+19:34:22.8 |
HIP 23356 |
21.46 |
| 2026-05-28 00:00 |
05:01:41.48 |
+19:34:47.8 |
HIP 23356 |
21.55 |
| 2026-05-28 12:00 |
05:01:59.04 |
+19:35:12.6 |
HIP 23356 |
22.42 |
| 2026-05-29 00:00 |
05:02:16.62 |
+19:35:37.2 |
HIP 23410 |
23.00 |
| 2026-05-29 12:00 |
05:02:34.23 |
+19:36:01.7 |
HIP 23410 |
23.95 |
| 2026-05-30 00:00 |
05:02:51.85 |
+19:36:26.0 |
HIP 23410 |
25.56 |
| 2026-05-30 12:00 |
05:03:09.50 |
+19:36:50.2 |
HIP 23410 |
27.71 |
| 2026-05-31 00:00 |
05:03:27.17 |
+19:37:14.2 |
HIP 23587 |
27.95 |
| 2026-05-31 12:00 |
05:03:44.85 |
+19:37:37.9 |
HIP 23587 |
26.02 |
| 2026-06-01 00:00 |
05:04:02.55 |
+19:38:01.6 |
HIP 23695 |
23.49 |
| 2026-06-01 12:00 |
05:04:20.27 |
+19:38:25.0 |
HIP 23695 |
19.64 |
| 2026-06-02 00:00 |
05:04:38.01 |
+19:38:48.3 |
HIP 23695 |
15.94 |