메타데이터
| 항목 |
값 |
| Designation |
247P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-01-04T03:56:54.191040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:04Z |
| Obs used |
1346 |
| NEO |
- |
| M1 |
17.900 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-09-09.0000000 |
| e |
0.62561919 |
| q (au) |
1.484389 |
| a (au) |
3.964918 |
| i (deg) |
13.682326 |
| Ω (om, deg) |
54.122500 |
| ω (w, deg) |
47.339311 |
| M (ma, deg) |
30.939706 |
밝기
산란 + 전체 선형
$$
M_a = (17.699 + 3.514\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.699 |
| n |
3.514 |
| gf |
1.000 |
| gb |
-0.555 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
01:51:57.47 |
+05:13:38.0 |
HIP 8775 |
27.19 |
| 2026-05-12 12:00 |
01:52:53.60 |
+05:20:06.2 |
HIP 8775 |
30.14 |
| 2026-05-13 00:00 |
01:53:49.85 |
+05:26:34.4 |
HIP 8775 |
39.41 |
| 2026-05-13 12:00 |
01:54:46.23 |
+05:33:02.8 |
HIP 9096 |
36.18 |
| 2026-05-14 00:00 |
01:55:42.73 |
+05:39:31.2 |
HIP 9096 |
24.69 |
| 2026-05-14 12:00 |
01:56:39.35 |
+05:45:59.6 |
HIP 9096 |
19.72 |
| 2026-05-15 00:00 |
01:57:36.10 |
+05:52:28.1 |
HIP 9096 |
25.49 |
| 2026-05-15 12:00 |
01:58:32.97 |
+05:58:56.6 |
HIP 9343 |
21.47 |
| 2026-05-16 00:00 |
01:59:29.96 |
+06:05:25.2 |
HIP 9343 |
7.79 |
| 2026-05-16 12:00 |
02:00:27.08 |
+06:11:53.8 |
HIP 9343 |
12.10 |
| 2026-05-17 00:00 |
02:01:24.33 |
+06:18:22.5 |
HIP 9343 |
26.84 |
| 2026-05-17 12:00 |
02:02:21.70 |
+06:24:51.1 |
HIP 9343 |
42.25 |
| 2026-05-18 00:00 |
02:03:19.20 |
+06:31:19.8 |
HIP 9790 |
39.80 |
| 2026-05-18 12:00 |
02:04:16.82 |
+06:37:48.5 |
HIP 9790 |
24.54 |
| 2026-05-19 00:00 |
02:05:14.57 |
+06:44:17.2 |
HIP 9790 |
10.68 |
| 2026-05-19 12:00 |
02:06:12.45 |
+06:50:45.9 |
HIP 9790 |
11.00 |
| 2026-05-20 00:00 |
02:07:10.46 |
+06:57:14.5 |
HIP 9882 |
20.82 |
| 2026-05-20 12:00 |
02:08:08.59 |
+07:03:43.2 |
HIP 10014 |
12.37 |
| 2026-05-21 00:00 |
02:09:06.86 |
+07:10:11.9 |
HIP 10009 |
7.46 |
| 2026-05-21 12:00 |
02:10:05.26 |
+07:16:40.5 |
HIP 10009 |
17.39 |
| 2026-05-22 00:00 |
02:11:03.78 |
+07:23:09.1 |
HIP 10274 |
19.31 |
| 2026-05-22 12:00 |
02:12:02.44 |
+07:29:37.7 |
HIP 10274 |
13.91 |
| 2026-05-23 00:00 |
02:13:01.23 |
+07:36:06.2 |
HIP 10274 |
22.83 |
| 2026-05-23 12:00 |
02:14:00.16 |
+07:42:34.7 |
HIP 10411 |
19.76 |
| 2026-05-24 00:00 |
02:14:59.22 |
+07:49:03.2 |
HIP 10411 |
17.85 |
| 2026-05-24 12:00 |
02:15:58.41 |
+07:55:31.6 |
HIP 10500 |
27.37 |
| 2026-05-25 00:00 |
02:16:57.74 |
+08:02:00.0 |
HIP 10776 |
27.17 |
| 2026-05-25 12:00 |
02:17:57.21 |
+08:08:28.3 |
HIP 10776 |
11.23 |
| 2026-05-26 00:00 |
02:18:56.81 |
+08:14:56.6 |
HIP 10776 |
5.57 |
| 2026-05-26 12:00 |
02:19:56.56 |
+08:21:24.8 |
HIP 10776 |
21.35 |
| 2026-05-27 00:00 |
02:20:56.44 |
+08:27:52.9 |
HIP 10975 |
25.76 |
| 2026-05-27 12:00 |
02:21:56.46 |
+08:34:21.0 |
HIP 11106 |
14.97 |
| 2026-05-28 00:00 |
02:22:56.62 |
+08:40:48.9 |
HIP 11106 |
8.09 |
| 2026-05-28 12:00 |
02:23:56.93 |
+08:47:16.8 |
HIP 11106 |
20.83 |
| 2026-05-29 00:00 |
02:24:57.38 |
+08:53:44.6 |
HIP 11314 |
14.44 |
| 2026-05-29 12:00 |
02:25:57.97 |
+09:00:12.3 |
HIP 11314 |
17.63 |
| 2026-05-30 00:00 |
02:26:58.71 |
+09:06:39.9 |
HIP 11314 |
30.75 |
| 2026-05-30 12:00 |
02:27:59.59 |
+09:13:07.5 |
HIP 11602 |
26.84 |
| 2026-05-31 00:00 |
02:29:00.62 |
+09:19:34.9 |
HIP 11603 |
16.72 |
| 2026-05-31 12:00 |
02:30:01.80 |
+09:26:02.1 |
HIP 11603 |
10.24 |
| 2026-06-01 00:00 |
02:31:03.12 |
+09:32:29.3 |
HIP 11603 |
21.69 |
| 2026-06-01 12:00 |
02:32:04.60 |
+09:38:56.3 |
HIP 11864 |
32.86 |
| 2026-06-02 00:00 |
02:33:06.23 |
+09:45:23.2 |
HIP 11864 |
22.84 |