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
$$
M_a = (8.002 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.002 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
02:22:19.43 |
+14:06:15.0 |
HIP 10895 |
32.63 |
| 2026-06-03 00:00 |
02:22:47.67 |
+14:08:58.2 |
HIP 10895 |
38.38 |
| 2026-06-03 12:00 |
02:23:15.88 |
+14:11:41.1 |
HIP 11298 |
38.17 |
| 2026-06-04 00:00 |
02:23:44.04 |
+14:14:23.5 |
HIP 11298 |
31.02 |
| 2026-06-04 12:00 |
02:24:12.17 |
+14:17:05.5 |
HIP 11298 |
23.99 |
| 2026-06-05 00:00 |
02:24:40.26 |
+14:19:47.0 |
HIP 11298 |
17.22 |
| 2026-06-05 12:00 |
02:25:08.31 |
+14:22:28.2 |
HIP 11298 |
11.17 |
| 2026-06-06 00:00 |
02:25:36.31 |
+14:25:08.9 |
HIP 11298 |
7.74 |
| 2026-06-06 12:00 |
02:26:04.28 |
+14:27:49.3 |
HIP 11298 |
10.06 |
| 2026-06-07 00:00 |
02:26:32.20 |
+14:30:29.2 |
HIP 11298 |
15.75 |
| 2026-06-07 12:00 |
02:27:00.07 |
+14:33:08.6 |
HIP 11298 |
22.35 |
| 2026-06-08 00:00 |
02:27:27.91 |
+14:35:47.7 |
HIP 11512 |
17.40 |
| 2026-06-08 12:00 |
02:27:55.70 |
+14:38:26.3 |
HIP 11512 |
10.56 |
| 2026-06-09 00:00 |
02:28:23.44 |
+14:41:04.5 |
HIP 11512 |
4.99 |
| 2026-06-09 12:00 |
02:28:51.14 |
+14:43:42.2 |
HIP 11512 |
6.49 |
| 2026-06-10 00:00 |
02:29:18.78 |
+14:46:19.5 |
HIP 11512 |
12.74 |
| 2026-06-10 12:00 |
02:29:46.39 |
+14:48:56.4 |
HIP 11512 |
19.63 |
| 2026-06-11 00:00 |
02:30:13.94 |
+14:51:32.8 |
HIP 11512 |
26.65 |
| 2026-06-11 12:00 |
02:30:41.44 |
+14:54:08.8 |
HIP 11619 |
30.91 |
| 2026-06-12 00:00 |
02:31:08.89 |
+14:56:44.3 |
HIP 11827 |
25.28 |
| 2026-06-12 12:00 |
02:31:36.29 |
+14:59:19.4 |
HIP 11827 |
18.32 |
| 2026-06-13 00:00 |
02:32:03.64 |
+15:01:54.0 |
HIP 11827 |
11.55 |
| 2026-06-13 12:00 |
02:32:30.93 |
+15:04:28.2 |
HIP 11827 |
5.62 |
| 2026-06-14 00:00 |
02:32:58.18 |
+15:07:01.9 |
HIP 11843 |
5.06 |
| 2026-06-14 12:00 |
02:33:25.36 |
+15:09:35.1 |
HIP 11843 |
10.64 |
| 2026-06-15 00:00 |
02:33:52.49 |
+15:12:07.9 |
HIP 11843 |
17.31 |
| 2026-06-15 12:00 |
02:34:19.56 |
+15:14:40.2 |
HIP 12015 |
12.39 |
| 2026-06-16 00:00 |
02:34:46.58 |
+15:17:12.0 |
HIP 12015 |
6.54 |
| 2026-06-16 12:00 |
02:35:13.53 |
+15:19:43.4 |
HIP 12015 |
5.43 |
| 2026-06-17 00:00 |
02:35:40.43 |
+15:22:14.3 |
HIP 12015 |
10.64 |
| 2026-06-17 12:00 |
02:36:07.27 |
+15:24:44.7 |
HIP 12125 |
15.86 |
| 2026-06-18 00:00 |
02:36:34.04 |
+15:27:14.7 |
HIP 12125 |
19.07 |
| 2026-06-18 12:00 |
02:37:00.76 |
+15:29:44.2 |
HIP 12125 |
23.90 |
| 2026-06-19 00:00 |
02:37:27.41 |
+15:32:13.1 |
HIP 12125 |
29.55 |
| 2026-06-19 12:00 |
02:37:53.99 |
+15:34:41.7 |
HIP 12125 |
35.62 |
| 2026-06-20 00:00 |
02:38:20.52 |
+15:37:09.7 |
HIP 12125 |
41.92 |
| 2026-06-20 12:00 |
02:38:46.97 |
+15:39:37.2 |
HIP 12553 |
39.00 |
| 2026-06-21 00:00 |
02:39:13.36 |
+15:42:04.3 |
HIP 12553 |
32.82 |
| 2026-06-21 12:00 |
02:39:39.69 |
+15:44:30.8 |
HIP 12553 |
26.97 |
| 2026-06-22 00:00 |
02:40:05.95 |
+15:46:56.9 |
HIP 12553 |
21.68 |