메타데이터
| 항목 |
값 |
| Designation |
197P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-05-18T23:56:01.968000Z |
| Orbit solution date (soln_date, UTC) |
2023-10-20T22:43:21Z |
| Obs used |
325 |
| NEO |
Yes |
| M1 |
18.200 |
| K1 |
5.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-09-26.0000000 |
| e |
0.62994097 |
| q (au) |
1.061109 |
| a (au) |
2.867406 |
| i (deg) |
25.556064 |
| Ω (om, deg) |
66.395886 |
| ω (w, deg) |
188.752044 |
| M (ma, deg) |
238.004767 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 3.342\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
3.342 |
| gf |
0.971 |
| gb |
-1.000 |
| k |
0.969 |
| δ90 |
4.109 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
05:48:15.22 |
+34:34:38.0 |
HIP 27296 |
22.15 |
| 2026-05-12 12:00 |
05:48:45.82 |
+34:34:47.0 |
HIP 27494 |
23.18 |
| 2026-05-13 00:00 |
05:49:16.53 |
+34:34:56.0 |
HIP 27494 |
22.29 |
| 2026-05-13 12:00 |
05:49:47.35 |
+34:35:05.0 |
HIP 27494 |
23.18 |
| 2026-05-14 00:00 |
05:50:18.27 |
+34:35:14.0 |
HIP 27494 |
25.68 |
| 2026-05-14 12:00 |
05:50:49.29 |
+34:35:23.1 |
HIP 27791 |
26.86 |
| 2026-05-15 00:00 |
05:51:20.42 |
+34:35:32.1 |
HIP 27791 |
20.96 |
| 2026-05-15 12:00 |
05:51:51.64 |
+34:35:41.1 |
HIP 27791 |
15.45 |
| 2026-05-16 00:00 |
05:52:22.97 |
+34:35:50.1 |
HIP 27791 |
10.99 |
| 2026-05-16 12:00 |
05:52:54.40 |
+34:35:59.1 |
HIP 27791 |
9.27 |
| 2026-05-17 00:00 |
05:53:25.92 |
+34:36:08.1 |
HIP 27791 |
11.64 |
| 2026-05-17 12:00 |
05:53:57.55 |
+34:36:17.1 |
HIP 27791 |
16.42 |
| 2026-05-18 00:00 |
05:54:29.27 |
+34:36:26.0 |
HIP 27791 |
22.13 |
| 2026-05-18 12:00 |
05:55:01.09 |
+34:36:35.0 |
HIP 28048 |
18.60 |
| 2026-05-19 00:00 |
05:55:33.00 |
+34:36:43.9 |
HIP 28048 |
15.87 |
| 2026-05-19 12:00 |
05:56:05.00 |
+34:36:52.7 |
HIP 28048 |
15.63 |
| 2026-05-20 00:00 |
05:56:37.10 |
+34:37:01.6 |
HIP 28048 |
18.00 |
| 2026-05-20 12:00 |
05:57:09.29 |
+34:37:10.4 |
HIP 28048 |
22.17 |
| 2026-05-21 00:00 |
05:57:41.57 |
+34:37:19.2 |
HIP 28357 |
23.72 |
| 2026-05-21 12:00 |
05:58:13.93 |
+34:37:27.9 |
HIP 28357 |
17.55 |
| 2026-05-22 00:00 |
05:58:46.39 |
+34:37:36.6 |
HIP 28357 |
11.90 |
| 2026-05-22 12:00 |
05:59:18.94 |
+34:37:45.3 |
HIP 28357 |
8.03 |
| 2026-05-23 00:00 |
05:59:51.57 |
+34:37:53.9 |
HIP 28357 |
8.80 |
| 2026-05-23 12:00 |
06:00:24.28 |
+34:38:02.4 |
HIP 28448 |
7.56 |
| 2026-05-24 00:00 |
06:00:57.08 |
+34:38:10.9 |
HIP 28448 |
10.22 |
| 2026-05-24 12:00 |
06:01:29.97 |
+34:38:19.4 |
HIP 28448 |
15.59 |
| 2026-05-25 00:00 |
06:02:02.94 |
+34:38:27.8 |
HIP 28448 |
21.78 |
| 2026-05-25 12:00 |
06:02:35.99 |
+34:38:36.1 |
HIP 28729 |
18.70 |
| 2026-05-26 00:00 |
06:03:09.12 |
+34:38:44.4 |
HIP 28729 |
11.95 |
| 2026-05-26 12:00 |
06:03:42.33 |
+34:38:52.6 |
HIP 28729 |
5.36 |
| 2026-05-27 00:00 |
06:04:15.63 |
+34:39:00.7 |
HIP 28729 |
2.83 |
| 2026-05-27 12:00 |
06:04:49.00 |
+34:39:08.8 |
HIP 28729 |
9.02 |
| 2026-05-28 00:00 |
06:05:22.45 |
+34:39:16.8 |
HIP 28729 |
15.79 |
| 2026-05-28 12:00 |
06:05:55.98 |
+34:39:24.7 |
HIP 29008 |
19.13 |
| 2026-05-29 00:00 |
06:06:29.58 |
+34:39:32.6 |
HIP 29008 |
13.51 |
| 2026-05-29 12:00 |
06:07:03.27 |
+34:39:40.3 |
HIP 29008 |
9.73 |
| 2026-05-30 00:00 |
06:07:37.02 |
+34:39:48.0 |
HIP 29008 |
10.13 |
| 2026-05-30 12:00 |
06:08:10.86 |
+34:39:55.6 |
HIP 29008 |
14.39 |
| 2026-05-31 00:00 |
06:08:44.76 |
+34:40:03.1 |
HIP 29008 |
20.22 |
| 2026-05-31 12:00 |
06:09:18.75 |
+34:40:10.6 |
HIP 29008 |
26.62 |
| 2026-06-01 00:00 |
06:09:52.80 |
+34:40:17.9 |
HIP 29308 |
26.89 |
| 2026-06-01 12:00 |
06:10:26.93 |
+34:40:25.1 |
HIP 29308 |
25.06 |
| 2026-06-02 00:00 |
06:11:01.12 |
+34:40:32.3 |
HIP 29308 |
25.14 |