메타데이터
| 항목 |
값 |
| Designation |
269P/Jedicke |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-11-25T22:04:56.112960Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:27Z |
| Obs used |
904 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
12.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-11-07.0000000 |
| e |
0.43469217 |
| q (au) |
4.077250 |
| a (au) |
7.212443 |
| i (deg) |
6.611643 |
| Ω (om, deg) |
248.991032 |
| ω (w, deg) |
223.915918 |
| M (ma, deg) |
266.123247 |
밝기
산란 + 전체 선형
$$
M_a = (4.141 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.141 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.932 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2012-09-11 |
2013-11-03 |
+7.2265 |
-4.196 |
| 2013-11-03 |
2014-11-25 |
+12.8920 |
-8.168 |
| 2014-12-14 |
2016-03-13 |
+7.6679 |
-4.901 |
| 2016-03-13 |
2017-03-21 |
+16.4470 |
-11.763 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
20:51:19.47 |
-10:34:38.6 |
HIP 102975 |
17.04 |
| 2026-06-01 12:00 |
20:51:16.47 |
-10:34:28.2 |
HIP 102975 |
17.20 |
| 2026-06-02 00:00 |
20:51:13.38 |
-10:34:18.3 |
HIP 102975 |
17.40 |
| 2026-06-02 12:00 |
20:51:10.19 |
-10:34:08.8 |
HIP 102975 |
17.65 |
| 2026-06-03 00:00 |
20:51:06.91 |
-10:33:59.8 |
HIP 102975 |
17.96 |
| 2026-06-03 12:00 |
20:51:03.53 |
-10:33:51.2 |
HIP 102975 |
18.31 |
| 2026-06-04 00:00 |
20:51:00.05 |
-10:33:43.1 |
HIP 102975 |
18.72 |
| 2026-06-04 12:00 |
20:50:56.49 |
-10:33:35.5 |
HIP 102975 |
19.18 |
| 2026-06-05 00:00 |
20:50:52.82 |
-10:33:28.3 |
HIP 102975 |
19.69 |
| 2026-06-05 12:00 |
20:50:49.07 |
-10:33:21.6 |
HIP 102975 |
20.25 |
| 2026-06-06 00:00 |
20:50:45.21 |
-10:33:15.3 |
HIP 102975 |
20.86 |
| 2026-06-06 12:00 |
20:50:41.27 |
-10:33:09.5 |
HIP 102975 |
21.52 |
| 2026-06-07 00:00 |
20:50:37.23 |
-10:33:04.1 |
HIP 102975 |
22.22 |
| 2026-06-07 12:00 |
20:50:33.10 |
-10:32:59.2 |
HIP 102975 |
22.97 |
| 2026-06-08 00:00 |
20:50:28.88 |
-10:32:54.8 |
HIP 102975 |
23.76 |
| 2026-06-08 12:00 |
20:50:24.56 |
-10:32:50.8 |
HIP 102975 |
24.59 |
| 2026-06-09 00:00 |
20:50:20.15 |
-10:32:47.3 |
HIP 102975 |
25.46 |
| 2026-06-09 12:00 |
20:50:15.65 |
-10:32:44.2 |
HIP 102975 |
26.37 |
| 2026-06-10 00:00 |
20:50:11.06 |
-10:32:41.6 |
HIP 102975 |
27.32 |
| 2026-06-10 12:00 |
20:50:06.37 |
-10:32:39.5 |
HIP 102975 |
28.31 |
| 2026-06-11 00:00 |
20:50:01.60 |
-10:32:37.8 |
HIP 102975 |
29.33 |
| 2026-06-11 12:00 |
20:49:56.73 |
-10:32:36.6 |
HIP 102975 |
30.39 |
| 2026-06-12 00:00 |
20:49:51.78 |
-10:32:35.9 |
HIP 102975 |
31.47 |
| 2026-06-12 12:00 |
20:49:46.73 |
-10:32:35.6 |
HIP 102975 |
32.60 |
| 2026-06-13 00:00 |
20:49:41.60 |
-10:32:35.8 |
HIP 102975 |
33.75 |
| 2026-06-13 12:00 |
20:49:36.37 |
-10:32:36.4 |
HIP 102975 |
34.93 |
| 2026-06-14 00:00 |
20:49:31.06 |
-10:32:37.5 |
HIP 102975 |
36.15 |
| 2026-06-14 12:00 |
20:49:25.66 |
-10:32:39.1 |
HIP 102975 |
37.39 |
| 2026-06-15 00:00 |
20:49:20.18 |
-10:32:41.1 |
HIP 102975 |
38.66 |
| 2026-06-15 12:00 |
20:49:14.61 |
-10:32:43.6 |
HIP 102607 |
38.29 |
| 2026-06-16 00:00 |
20:49:08.95 |
-10:32:46.6 |
HIP 102607 |
37.47 |
| 2026-06-16 12:00 |
20:49:03.20 |
-10:32:50.0 |
HIP 102607 |
36.67 |
| 2026-06-17 00:00 |
20:48:57.37 |
-10:32:53.8 |
HIP 102527 |
35.77 |
| 2026-06-17 12:00 |
20:48:51.46 |
-10:32:58.2 |
HIP 102527 |
34.35 |
| 2026-06-18 00:00 |
20:48:45.47 |
-10:33:02.9 |
HIP 102527 |
32.92 |
| 2026-06-18 12:00 |
20:48:39.39 |
-10:33:08.2 |
HIP 102527 |
31.47 |
| 2026-06-19 00:00 |
20:48:33.23 |
-10:33:13.9 |
HIP 102527 |
30.00 |
| 2026-06-19 12:00 |
20:48:26.98 |
-10:33:20.0 |
HIP 102527 |
28.52 |
| 2026-06-20 00:00 |
20:48:20.66 |
-10:33:26.6 |
HIP 102527 |
27.02 |
| 2026-06-20 12:00 |
20:48:14.26 |
-10:33:33.6 |
HIP 102527 |
25.51 |
| 2026-06-21 00:00 |
20:48:07.77 |
-10:33:41.1 |
HIP 102527 |
23.98 |
| 2026-06-21 12:00 |
20:48:01.21 |
-10:33:49.0 |
HIP 102527 |
22.45 |
| 2026-06-22 00:00 |
20:47:54.57 |
-10:33:57.4 |
HIP 102527 |
20.90 |