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 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
22:37:41.84 |
+03:08:30.2 |
HIP 111779 |
16.97 |
| 2026-03-26 12:00 |
22:37:56.40 |
+03:10:30.0 |
HIP 111779 |
13.04 |
| 2026-03-27 00:00 |
22:38:10.93 |
+03:12:29.9 |
HIP 111779 |
9.31 |
| 2026-03-27 12:00 |
22:38:25.42 |
+03:14:30.0 |
HIP 111779 |
6.14 |
| 2026-03-28 00:00 |
22:38:39.87 |
+03:16:30.2 |
HIP 111779 |
4.77 |
| 2026-03-28 12:00 |
22:38:54.29 |
+03:18:30.6 |
HIP 111779 |
6.46 |
| 2026-03-29 00:00 |
22:39:08.67 |
+03:20:31.0 |
HIP 111779 |
9.72 |
| 2026-03-29 12:00 |
22:39:23.02 |
+03:22:31.6 |
HIP 111886 |
10.38 |
| 2026-03-30 00:00 |
22:39:37.32 |
+03:24:32.3 |
HIP 111886 |
10.45 |
| 2026-03-30 12:00 |
22:39:51.59 |
+03:26:33.1 |
HIP 111886 |
12.01 |
| 2026-03-31 00:00 |
22:40:05.82 |
+03:28:34.1 |
HIP 111886 |
14.59 |
| 2026-03-31 12:00 |
22:40:20.00 |
+03:30:35.1 |
HIP 111886 |
17.74 |
| 2026-04-01 00:00 |
22:40:34.15 |
+03:32:36.2 |
HIP 111886 |
21.20 |
| 2026-04-01 12:00 |
22:40:48.26 |
+03:34:37.5 |
HIP 111886 |
24.84 |
| 2026-04-02 00:00 |
22:41:02.32 |
+03:36:38.8 |
HIP 111886 |
28.59 |
| 2026-04-02 12:00 |
22:41:16.35 |
+03:38:40.2 |
HIP 111886 |
32.41 |
| 2026-04-03 00:00 |
22:41:30.33 |
+03:40:41.8 |
HIP 112007 |
34.97 |
| 2026-04-03 12:00 |
22:41:44.27 |
+03:42:43.4 |
HIP 112229 |
33.21 |
| 2026-04-04 00:00 |
22:41:58.16 |
+03:44:45.1 |
HIP 112229 |
29.29 |
| 2026-04-04 12:00 |
22:42:12.01 |
+03:46:46.8 |
HIP 112229 |
25.41 |
| 2026-04-05 00:00 |
22:42:25.82 |
+03:48:48.7 |
HIP 112229 |
21.60 |
| 2026-04-05 12:00 |
22:42:39.58 |
+03:50:50.6 |
HIP 112229 |
17.87 |
| 2026-04-06 00:00 |
22:42:53.29 |
+03:52:52.6 |
HIP 112229 |
14.30 |
| 2026-04-06 12:00 |
22:43:06.96 |
+03:54:54.7 |
HIP 112229 |
11.03 |
| 2026-04-07 00:00 |
22:43:20.59 |
+03:56:56.8 |
HIP 112229 |
8.40 |
| 2026-04-07 12:00 |
22:43:34.16 |
+03:58:59.0 |
HIP 112229 |
7.12 |
| 2026-04-08 00:00 |
22:43:47.69 |
+04:01:01.2 |
HIP 112229 |
7.89 |
| 2026-04-08 12:00 |
22:44:01.16 |
+04:03:03.5 |
HIP 112229 |
10.24 |
| 2026-04-09 00:00 |
22:44:14.59 |
+04:05:05.9 |
HIP 112229 |
13.35 |
| 2026-04-09 12:00 |
22:44:27.97 |
+04:07:08.2 |
HIP 112229 |
16.79 |
| 2026-04-10 00:00 |
22:44:41.30 |
+04:09:10.7 |
HIP 112229 |
20.40 |
| 2026-04-10 12:00 |
22:44:54.58 |
+04:11:13.1 |
HIP 112371 |
21.80 |
| 2026-04-11 00:00 |
22:45:07.80 |
+04:13:15.6 |
HIP 112371 |
18.53 |
| 2026-04-11 12:00 |
22:45:20.98 |
+04:15:18.1 |
HIP 112371 |
15.54 |
| 2026-04-12 00:00 |
22:45:34.10 |
+04:17:20.6 |
HIP 112371 |
13.03 |
| 2026-04-12 12:00 |
22:45:47.17 |
+04:19:23.2 |
HIP 112371 |
11.29 |
| 2026-04-13 00:00 |
22:46:00.18 |
+04:21:25.8 |
HIP 112371 |
10.71 |
| 2026-04-13 12:00 |
22:46:13.14 |
+04:23:28.4 |
HIP 112371 |
11.45 |
| 2026-04-14 00:00 |
22:46:26.04 |
+04:25:30.9 |
HIP 112371 |
13.28 |
| 2026-04-14 12:00 |
22:46:38.89 |
+04:27:33.5 |
HIP 112371 |
15.81 |
| 2026-04-15 00:00 |
22:46:51.68 |
+04:29:36.1 |
HIP 112371 |
18.77 |
| 2026-04-15 12:00 |
22:47:04.41 |
+04:31:38.7 |
HIP 112485 |
21.90 |
| 2026-04-16 00:00 |
22:47:17.09 |
+04:33:41.2 |
HIP 112444 |
22.73 |