메타데이터
| 항목 |
값 |
| Designation |
228P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-08-23T22:00:38.856960Z |
| Orbit solution date (soln_date, UTC) |
2025-10-28T16:12:51Z |
| Obs used |
436 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
13.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-04-14.0000000 |
| e |
0.17695985 |
| q (au) |
3.430453 |
| a (au) |
4.168026 |
| i (deg) |
7.915353 |
| Ω (om, deg) |
31.066132 |
| ω (w, deg) |
114.805864 |
| M (ma, deg) |
344.720485 |
밝기
산란 + 전체 선형
$$
M_a = (7.998 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.998 |
| n |
6.000 |
| gf |
0.994 |
| gb |
-0.718 |
| k |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
02:01:36.98 |
+12:03:17.1 |
HIP 9490 |
10.38 |
| 2026-05-12 12:00 |
02:02:06.31 |
+12:06:16.0 |
HIP 9490 |
4.61 |
| 2026-05-13 00:00 |
02:02:35.64 |
+12:09:14.5 |
HIP 9490 |
7.44 |
| 2026-05-13 12:00 |
02:03:04.95 |
+12:12:12.8 |
HIP 9490 |
14.48 |
| 2026-05-14 00:00 |
02:03:34.24 |
+12:15:10.7 |
HIP 9607 |
19.92 |
| 2026-05-14 12:00 |
02:04:03.53 |
+12:18:08.3 |
HIP 9607 |
18.54 |
| 2026-05-15 00:00 |
02:04:32.79 |
+12:21:05.6 |
HIP 9764 |
18.08 |
| 2026-05-15 12:00 |
02:05:02.05 |
+12:24:02.6 |
HIP 9764 |
15.68 |
| 2026-05-16 00:00 |
02:05:31.28 |
+12:26:59.2 |
HIP 9764 |
16.86 |
| 2026-05-16 12:00 |
02:06:00.50 |
+12:29:55.5 |
HIP 9764 |
21.01 |
| 2026-05-17 00:00 |
02:06:29.70 |
+12:32:51.5 |
HIP 9764 |
26.78 |
| 2026-05-17 12:00 |
02:06:58.89 |
+12:35:47.2 |
HIP 9764 |
33.34 |
| 2026-05-18 00:00 |
02:07:28.05 |
+12:38:42.5 |
HIP 9764 |
40.30 |
| 2026-05-18 12:00 |
02:07:57.20 |
+12:41:37.4 |
HIP 10106 |
37.21 |
| 2026-05-19 00:00 |
02:08:26.32 |
+12:44:32.1 |
HIP 10094 |
32.54 |
| 2026-05-19 12:00 |
02:08:55.43 |
+12:47:26.3 |
HIP 10094 |
26.25 |
| 2026-05-20 00:00 |
02:09:24.51 |
+12:50:20.2 |
HIP 10094 |
20.91 |
| 2026-05-20 12:00 |
02:09:53.57 |
+12:53:13.8 |
HIP 10094 |
17.40 |
| 2026-05-21 00:00 |
02:10:22.61 |
+12:56:07.0 |
HIP 10094 |
16.89 |
| 2026-05-21 12:00 |
02:10:51.62 |
+12:58:59.8 |
HIP 10094 |
19.61 |
| 2026-05-22 00:00 |
02:11:20.61 |
+13:01:52.3 |
HIP 10094 |
24.49 |
| 2026-05-22 12:00 |
02:11:49.58 |
+13:04:44.4 |
HIP 10329 |
18.19 |
| 2026-05-23 00:00 |
02:12:18.51 |
+13:07:36.2 |
HIP 10329 |
11.97 |
| 2026-05-23 12:00 |
02:12:47.43 |
+13:10:27.6 |
HIP 10329 |
8.45 |
| 2026-05-24 00:00 |
02:13:16.32 |
+13:13:18.6 |
HIP 10329 |
10.72 |
| 2026-05-24 12:00 |
02:13:45.18 |
+13:16:09.2 |
HIP 10329 |
16.53 |
| 2026-05-25 00:00 |
02:14:14.01 |
+13:18:59.5 |
HIP 10329 |
23.37 |
| 2026-05-25 12:00 |
02:14:42.81 |
+13:21:49.4 |
HIP 10329 |
30.54 |
| 2026-05-26 00:00 |
02:15:11.59 |
+13:24:38.9 |
HIP 10329 |
37.85 |
| 2026-05-26 12:00 |
02:15:40.33 |
+13:27:28.0 |
HIP 10730 |
35.45 |
| 2026-05-27 00:00 |
02:16:09.05 |
+13:30:16.8 |
HIP 10730 |
28.78 |
| 2026-05-27 12:00 |
02:16:37.74 |
+13:33:05.1 |
HIP 10730 |
22.66 |
| 2026-05-28 00:00 |
02:17:06.39 |
+13:35:53.1 |
HIP 10730 |
17.66 |
| 2026-05-28 12:00 |
02:17:35.02 |
+13:38:40.7 |
HIP 10730 |
14.93 |
| 2026-05-29 00:00 |
02:18:03.61 |
+13:41:27.9 |
HIP 10730 |
15.69 |
| 2026-05-29 12:00 |
02:18:32.17 |
+13:44:14.7 |
HIP 10766 |
12.78 |
| 2026-05-30 00:00 |
02:19:00.70 |
+13:47:01.2 |
HIP 10766 |
11.91 |
| 2026-05-30 12:00 |
02:19:29.19 |
+13:49:47.2 |
HIP 10766 |
15.21 |
| 2026-05-31 00:00 |
02:19:57.65 |
+13:52:32.8 |
HIP 10921 |
15.93 |
| 2026-05-31 12:00 |
02:20:26.08 |
+13:55:18.1 |
HIP 10921 |
15.42 |
| 2026-06-01 00:00 |
02:20:54.47 |
+13:58:02.9 |
HIP 10921 |
18.22 |
| 2026-06-01 12:00 |
02:21:22.83 |
+14:00:47.4 |
HIP 10921 |
23.14 |
| 2026-06-02 00:00 |
02:21:51.14 |
+14:03:31.4 |
HIP 10895 |
27.66 |