메타데이터
| 항목 |
값 |
| Designation |
290P/Jager |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-03-14T22:45:37.206720Z |
| Orbit solution date (soln_date, UTC) |
2025-11-21T13:43:05Z |
| Obs used |
3751 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
9.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-04-01.0000000 |
| e |
0.64700621 |
| q (au) |
2.154497 |
| a (au) |
6.103499 |
| i (deg) |
19.069575 |
| Ω (om, deg) |
303.485457 |
| ω (w, deg) |
180.921262 |
| M (ma, deg) |
265.618384 |
밝기
산란 + 전체 선형
$$
M_a = (13.382 + 2.659\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.382 |
| n |
2.659 |
| gf |
0.999 |
| gb |
-0.623 |
| k |
0.800 |
| 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 |
| 2012-12-01 |
2013-08-17 |
-29.8986 |
+14.031 |
| 2013-08-17 |
2014-03-14 |
+3.1233 |
-1.256 |
| 2014-03-15 |
2015-04-24 |
+13.6416 |
-4.843 |
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 |
23:01:17.83 |
+07:30:49.4 |
HIP 113811 |
24.41 |
| 2026-06-01 12:00 |
23:01:22.62 |
+07:32:31.1 |
HIP 113811 |
22.83 |
| 2026-06-02 00:00 |
23:01:27.30 |
+07:34:12.4 |
HIP 113811 |
21.35 |
| 2026-06-02 12:00 |
23:01:31.88 |
+07:35:53.2 |
HIP 113811 |
20.01 |
| 2026-06-03 00:00 |
23:01:36.34 |
+07:37:33.5 |
HIP 113811 |
18.81 |
| 2026-06-03 12:00 |
23:01:40.69 |
+07:39:13.4 |
HIP 113811 |
17.79 |
| 2026-06-04 00:00 |
23:01:44.93 |
+07:40:52.9 |
HIP 113811 |
16.97 |
| 2026-06-04 12:00 |
23:01:49.06 |
+07:42:31.8 |
HIP 113811 |
16.36 |
| 2026-06-05 00:00 |
23:01:53.07 |
+07:44:10.3 |
HIP 113811 |
15.99 |
| 2026-06-05 12:00 |
23:01:56.97 |
+07:45:48.2 |
HIP 113811 |
15.87 |
| 2026-06-06 00:00 |
23:02:00.76 |
+07:47:25.7 |
HIP 113811 |
15.99 |
| 2026-06-06 12:00 |
23:02:04.44 |
+07:49:02.7 |
HIP 113811 |
16.34 |
| 2026-06-07 00:00 |
23:02:08.00 |
+07:50:39.2 |
HIP 113663 |
16.41 |
| 2026-06-07 12:00 |
23:02:11.44 |
+07:52:15.1 |
HIP 113663 |
16.32 |
| 2026-06-08 00:00 |
23:02:14.77 |
+07:53:50.6 |
HIP 113663 |
16.42 |
| 2026-06-08 12:00 |
23:02:17.99 |
+07:55:25.5 |
HIP 113663 |
16.68 |
| 2026-06-09 00:00 |
23:02:21.09 |
+07:57:00.0 |
HIP 113663 |
17.09 |
| 2026-06-09 12:00 |
23:02:24.07 |
+07:58:33.8 |
HIP 113663 |
17.64 |
| 2026-06-10 00:00 |
23:02:26.93 |
+08:00:07.1 |
HIP 113663 |
18.31 |
| 2026-06-10 12:00 |
23:02:29.68 |
+08:01:39.9 |
HIP 113663 |
19.08 |
| 2026-06-11 00:00 |
23:02:32.31 |
+08:03:12.2 |
HIP 113663 |
19.93 |
| 2026-06-11 12:00 |
23:02:34.82 |
+08:04:43.8 |
HIP 113663 |
20.85 |
| 2026-06-12 00:00 |
23:02:37.21 |
+08:06:15.0 |
HIP 113663 |
21.82 |
| 2026-06-12 12:00 |
23:02:39.48 |
+08:07:45.5 |
HIP 113663 |
22.84 |
| 2026-06-13 00:00 |
23:02:41.63 |
+08:09:15.5 |
HIP 113663 |
23.89 |
| 2026-06-13 12:00 |
23:02:43.66 |
+08:10:44.9 |
HIP 113663 |
24.97 |
| 2026-06-14 00:00 |
23:02:45.57 |
+08:12:13.7 |
HIP 113663 |
26.07 |
| 2026-06-14 12:00 |
23:02:47.35 |
+08:13:41.9 |
HIP 113663 |
27.18 |
| 2026-06-15 00:00 |
23:02:49.02 |
+08:15:09.5 |
HIP 113722 |
27.79 |
| 2026-06-15 12:00 |
23:02:50.56 |
+08:16:36.4 |
HIP 113722 |
26.73 |
| 2026-06-16 00:00 |
23:02:51.98 |
+08:18:02.8 |
HIP 113722 |
25.71 |
| 2026-06-16 12:00 |
23:02:53.28 |
+08:19:28.6 |
HIP 113722 |
24.72 |
| 2026-06-17 00:00 |
23:02:54.46 |
+08:20:53.7 |
HIP 113722 |
23.77 |
| 2026-06-17 12:00 |
23:02:55.51 |
+08:22:18.2 |
HIP 113722 |
22.86 |
| 2026-06-18 00:00 |
23:02:56.44 |
+08:23:42.1 |
HIP 113722 |
22.00 |
| 2026-06-18 12:00 |
23:02:57.25 |
+08:25:05.3 |
HIP 113722 |
21.17 |
| 2026-06-19 00:00 |
23:02:57.93 |
+08:26:27.9 |
HIP 113722 |
20.40 |
| 2026-06-19 12:00 |
23:02:58.49 |
+08:27:49.8 |
HIP 113722 |
19.67 |
| 2026-06-20 00:00 |
23:02:58.92 |
+08:29:11.1 |
HIP 113722 |
18.99 |
| 2026-06-20 12:00 |
23:02:59.23 |
+08:30:31.7 |
HIP 113722 |
18.37 |
| 2026-06-21 00:00 |
23:02:59.42 |
+08:31:51.6 |
HIP 113722 |
17.80 |
| 2026-06-21 12:00 |
23:02:59.48 |
+08:33:10.9 |
HIP 113722 |
17.30 |
| 2026-06-22 00:00 |
23:02:59.41 |
+08:34:29.5 |
HIP 113722 |
16.85 |