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
$$
M_a = (20.000 + 3.258\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
3.258 |
| gf |
0.933 |
| gb |
-1.000 |
| k |
0.972 |
| δ90 |
4.153 |
| 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) |
| 2026-09-20 00:00 |
08:25:53.00 |
+34:50:27.8 |
HIP 41262 |
14.20 |
| 2026-09-20 12:00 |
08:26:27.03 |
+34:50:56.1 |
HIP 41262 |
19.45 |
| 2026-09-21 00:00 |
08:27:00.98 |
+34:51:25.2 |
HIP 41554 |
19.34 |
| 2026-09-21 12:00 |
08:27:34.85 |
+34:51:55.1 |
HIP 41554 |
13.41 |
| 2026-09-22 00:00 |
08:28:08.64 |
+34:52:25.8 |
HIP 41554 |
9.09 |
| 2026-09-22 12:00 |
08:28:42.34 |
+34:52:57.2 |
HIP 41554 |
9.01 |
| 2026-09-23 00:00 |
08:29:15.96 |
+34:53:29.5 |
HIP 41669 |
7.62 |
| 2026-09-23 12:00 |
08:29:49.49 |
+34:54:02.5 |
HIP 41669 |
4.46 |
| 2026-09-24 00:00 |
08:30:22.94 |
+34:54:36.4 |
HIP 41669 |
8.75 |
| 2026-09-24 12:00 |
08:30:56.31 |
+34:55:11.2 |
HIP 41820 |
8.41 |
| 2026-09-25 00:00 |
08:31:29.58 |
+34:55:46.7 |
HIP 41820 |
2.46 |
| 2026-09-25 12:00 |
08:32:02.77 |
+34:56:23.1 |
HIP 41820 |
5.90 |
| 2026-09-26 00:00 |
08:32:35.87 |
+34:57:00.4 |
HIP 41820 |
12.50 |
| 2026-09-26 12:00 |
08:33:08.88 |
+34:57:38.6 |
HIP 41820 |
19.23 |
| 2026-09-27 00:00 |
08:33:41.80 |
+34:58:17.6 |
HIP 41820 |
25.97 |
| 2026-09-27 12:00 |
08:34:14.63 |
+34:58:57.6 |
HIP 42230 |
30.80 |
| 2026-09-28 00:00 |
08:34:47.36 |
+34:59:38.4 |
HIP 42230 |
24.78 |
| 2026-09-28 12:00 |
08:35:20.00 |
+35:00:20.2 |
HIP 42230 |
19.27 |
| 2026-09-29 00:00 |
08:35:52.54 |
+35:01:02.9 |
HIP 42230 |
14.83 |
| 2026-09-29 12:00 |
08:36:24.99 |
+35:01:46.6 |
HIP 42230 |
12.61 |
| 2026-09-30 00:00 |
08:36:57.35 |
+35:02:31.2 |
HIP 42230 |
13.71 |
| 2026-09-30 12:00 |
08:37:29.60 |
+35:03:16.9 |
HIP 42230 |
17.49 |
| 2026-10-01 00:00 |
08:38:01.75 |
+35:04:03.5 |
HIP 42230 |
22.63 |
| 2026-10-01 12:00 |
08:38:33.81 |
+35:04:51.1 |
HIP 42417 |
21.48 |
| 2026-10-02 00:00 |
08:39:05.76 |
+35:05:39.7 |
HIP 42417 |
21.63 |
| 2026-10-02 12:00 |
08:39:37.61 |
+35:06:29.3 |
HIP 42583 |
22.00 |
| 2026-10-03 00:00 |
08:40:09.35 |
+35:07:20.1 |
HIP 42583 |
19.46 |
| 2026-10-03 12:00 |
08:40:40.99 |
+35:08:11.8 |
HIP 42583 |
18.97 |
| 2026-10-04 00:00 |
08:41:12.52 |
+35:09:04.6 |
HIP 42583 |
20.67 |
| 2026-10-04 12:00 |
08:41:43.94 |
+35:09:58.6 |
HIP 42583 |
24.08 |
| 2026-10-05 00:00 |
08:42:15.26 |
+35:10:53.6 |
HIP 42856 |
23.17 |
| 2026-10-05 12:00 |
08:42:46.46 |
+35:11:49.7 |
HIP 42856 |
17.89 |
| 2026-10-06 00:00 |
08:43:17.54 |
+35:12:47.0 |
HIP 42856 |
13.69 |
| 2026-10-06 12:00 |
08:43:48.52 |
+35:13:45.4 |
HIP 42856 |
11.75 |
| 2026-10-07 00:00 |
08:44:19.37 |
+35:14:45.0 |
HIP 42856 |
13.08 |
| 2026-10-07 12:00 |
08:44:50.11 |
+35:15:45.7 |
HIP 42856 |
16.91 |
| 2026-10-08 00:00 |
08:45:20.73 |
+35:16:47.6 |
HIP 42856 |
21.94 |
| 2026-10-08 12:00 |
08:45:51.24 |
+35:17:50.8 |
HIP 42856 |
27.50 |
| 2026-10-09 00:00 |
08:46:21.61 |
+35:18:55.1 |
HIP 43024 |
27.41 |
| 2026-10-09 12:00 |
08:46:51.87 |
+35:20:00.7 |
HIP 43024 |
27.93 |
| 2026-10-10 00:00 |
08:47:22.00 |
+35:21:07.5 |
HIP 43024 |
29.76 |
| 2026-10-10 12:00 |
08:47:52.00 |
+35:22:15.5 |
HIP 43368 |
26.30 |
| 2026-10-11 00:00 |
08:48:21.88 |
+35:23:24.9 |
HIP 43368 |
20.21 |