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) |
| 2026-09-20 00:00 |
22:34:50.80 |
+08:30:24.5 |
HIP 111572 |
24.10 |
| 2026-09-20 12:00 |
22:34:37.82 |
+08:29:07.9 |
HIP 111572 |
26.12 |
| 2026-09-21 00:00 |
22:34:24.91 |
+08:27:51.0 |
HIP 111572 |
28.41 |
| 2026-09-21 12:00 |
22:34:12.06 |
+08:26:33.7 |
HIP 111572 |
30.89 |
| 2026-09-22 00:00 |
22:33:59.26 |
+08:25:15.9 |
HIP 111572 |
33.53 |
| 2026-09-22 12:00 |
22:33:46.53 |
+08:23:57.8 |
HIP 111572 |
36.28 |
| 2026-09-23 00:00 |
22:33:33.86 |
+08:22:39.4 |
HIP 111140 |
38.89 |
| 2026-09-23 12:00 |
22:33:21.25 |
+08:21:20.5 |
HIP 111140 |
35.92 |
| 2026-09-24 00:00 |
22:33:08.71 |
+08:20:01.4 |
HIP 111140 |
33.04 |
| 2026-09-24 12:00 |
22:32:56.24 |
+08:18:41.9 |
HIP 111140 |
30.28 |
| 2026-09-25 00:00 |
22:32:43.84 |
+08:17:22.1 |
HIP 111140 |
27.67 |
| 2026-09-25 12:00 |
22:32:31.51 |
+08:16:02.0 |
HIP 111140 |
25.25 |
| 2026-09-26 00:00 |
22:32:19.26 |
+08:14:41.6 |
HIP 111140 |
23.08 |
| 2026-09-26 12:00 |
22:32:07.07 |
+08:13:20.9 |
HIP 111140 |
21.22 |
| 2026-09-27 00:00 |
22:31:54.97 |
+08:12:00.0 |
HIP 111140 |
19.76 |
| 2026-09-27 12:00 |
22:31:42.94 |
+08:10:38.7 |
HIP 111140 |
18.78 |
| 2026-09-28 00:00 |
22:31:30.99 |
+08:09:17.2 |
HIP 111140 |
18.35 |
| 2026-09-28 12:00 |
22:31:19.11 |
+08:07:55.6 |
HIP 111140 |
18.51 |
| 2026-09-29 00:00 |
22:31:07.32 |
+08:06:33.6 |
HIP 111140 |
19.22 |
| 2026-09-29 12:00 |
22:30:55.62 |
+08:05:11.5 |
HIP 111140 |
20.42 |
| 2026-09-30 00:00 |
22:30:44.00 |
+08:03:49.2 |
HIP 111021 |
18.22 |
| 2026-09-30 12:00 |
22:30:32.46 |
+08:02:26.7 |
HIP 111021 |
15.17 |
| 2026-10-01 00:00 |
22:30:21.01 |
+08:01:04.1 |
HIP 111021 |
12.21 |
| 2026-10-01 12:00 |
22:30:09.65 |
+07:59:41.2 |
HIP 111021 |
9.39 |
| 2026-10-02 00:00 |
22:29:58.38 |
+07:58:18.3 |
HIP 111021 |
6.87 |
| 2026-10-02 12:00 |
22:29:47.21 |
+07:56:55.2 |
HIP 111021 |
5.09 |
| 2026-10-03 00:00 |
22:29:36.12 |
+07:55:31.9 |
HIP 111021 |
4.87 |
| 2026-10-03 12:00 |
22:29:25.13 |
+07:54:08.6 |
HIP 111021 |
6.36 |
| 2026-10-04 00:00 |
22:29:14.24 |
+07:52:45.2 |
HIP 111021 |
8.70 |
| 2026-10-04 12:00 |
22:29:03.44 |
+07:51:21.7 |
HIP 111021 |
11.36 |
| 2026-10-05 00:00 |
22:28:52.74 |
+07:49:58.1 |
HIP 110995 |
14.13 |
| 2026-10-05 12:00 |
22:28:42.15 |
+07:48:34.5 |
HIP 110995 |
14.19 |
| 2026-10-06 00:00 |
22:28:31.65 |
+07:47:10.8 |
HIP 110995 |
14.84 |
| 2026-10-06 12:00 |
22:28:21.26 |
+07:45:47.1 |
HIP 110995 |
15.99 |
| 2026-10-07 00:00 |
22:28:10.97 |
+07:44:23.4 |
HIP 110995 |
17.53 |
| 2026-10-07 12:00 |
22:28:00.79 |
+07:42:59.6 |
HIP 110995 |
19.36 |
| 2026-10-08 00:00 |
22:27:50.72 |
+07:41:35.9 |
HIP 110995 |
21.41 |
| 2026-10-08 12:00 |
22:27:40.75 |
+07:40:12.3 |
HIP 110995 |
23.59 |
| 2026-10-09 00:00 |
22:27:30.90 |
+07:38:48.6 |
HIP 110760 |
23.44 |
| 2026-10-09 12:00 |
22:27:21.16 |
+07:37:25.1 |
HIP 110760 |
22.69 |
| 2026-10-10 00:00 |
22:27:11.53 |
+07:36:01.5 |
HIP 110760 |
22.28 |
| 2026-10-10 12:00 |
22:27:02.01 |
+07:34:38.1 |
HIP 110760 |
22.22 |
| 2026-10-11 00:00 |
22:26:52.61 |
+07:33:14.8 |
HIP 110850 |
22.00 |