메타데이터
| 항목 |
값 |
| Designation |
222P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-09-01T04:04:48.025920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:27:57Z |
| Obs used |
239 |
| NEO |
Yes |
| M1 |
19.300 |
| K1 |
11.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-06-03.0000000 |
| e |
0.72682414 |
| q (au) |
0.780587 |
| a (au) |
2.857451 |
| i (deg) |
5.146524 |
| Ω (om, deg) |
7.132797 |
| ω (w, deg) |
345.426748 |
| M (ma, deg) |
267.122715 |
밝기
산란 + 전체 선형
$$
M_a = (16.134 + 2.231\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.134 |
| n |
2.231 |
| gf |
1.000 |
| gb |
-0.748 |
| 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 |
10:22:57.70 |
+12:17:12.7 |
HIP 50802 |
12.38 |
| 2026-05-12 12:00 |
10:22:58.20 |
+12:16:47.6 |
HIP 50802 |
12.19 |
| 2026-05-13 00:00 |
10:22:58.90 |
+12:16:21.4 |
HIP 50802 |
12.04 |
| 2026-05-13 12:00 |
10:22:59.80 |
+12:15:54.2 |
HIP 50802 |
11.94 |
| 2026-05-14 00:00 |
10:23:00.89 |
+12:15:25.9 |
HIP 50802 |
11.88 |
| 2026-05-14 12:00 |
10:23:02.19 |
+12:14:56.4 |
HIP 50802 |
11.88 |
| 2026-05-15 00:00 |
10:23:03.69 |
+12:14:26.0 |
HIP 50802 |
11.94 |
| 2026-05-15 12:00 |
10:23:05.38 |
+12:13:54.4 |
HIP 50802 |
12.08 |
| 2026-05-16 00:00 |
10:23:07.27 |
+12:13:21.8 |
HIP 50802 |
12.28 |
| 2026-05-16 12:00 |
10:23:09.35 |
+12:12:48.1 |
HIP 50802 |
12.56 |
| 2026-05-17 00:00 |
10:23:11.63 |
+12:12:13.4 |
HIP 50802 |
12.93 |
| 2026-05-17 12:00 |
10:23:14.10 |
+12:11:37.7 |
HIP 50802 |
13.37 |
| 2026-05-18 00:00 |
10:23:16.77 |
+12:11:00.9 |
HIP 50802 |
13.89 |
| 2026-05-18 12:00 |
10:23:19.62 |
+12:10:23.0 |
HIP 50802 |
14.50 |
| 2026-05-19 00:00 |
10:23:22.67 |
+12:09:44.2 |
HIP 50802 |
15.18 |
| 2026-05-19 12:00 |
10:23:25.91 |
+12:09:04.3 |
HIP 50802 |
15.95 |
| 2026-05-20 00:00 |
10:23:29.34 |
+12:08:23.4 |
HIP 50802 |
16.79 |
| 2026-05-20 12:00 |
10:23:32.95 |
+12:07:41.5 |
HIP 50802 |
17.70 |
| 2026-05-21 00:00 |
10:23:36.76 |
+12:06:58.6 |
HIP 50802 |
18.68 |
| 2026-05-21 12:00 |
10:23:40.74 |
+12:06:14.7 |
HIP 50802 |
19.73 |
| 2026-05-22 00:00 |
10:23:44.92 |
+12:05:29.8 |
HIP 50802 |
20.85 |
| 2026-05-22 12:00 |
10:23:49.27 |
+12:04:43.9 |
HIP 50802 |
22.03 |
| 2026-05-23 00:00 |
10:23:53.81 |
+12:03:57.0 |
HIP 50802 |
23.27 |
| 2026-05-23 12:00 |
10:23:58.53 |
+12:03:09.2 |
HIP 50802 |
24.57 |
| 2026-05-24 00:00 |
10:24:03.43 |
+12:02:20.4 |
HIP 50802 |
25.93 |
| 2026-05-24 12:00 |
10:24:08.50 |
+12:01:30.7 |
HIP 50802 |
27.34 |
| 2026-05-25 00:00 |
10:24:13.76 |
+12:00:40.0 |
HIP 50802 |
28.81 |
| 2026-05-25 12:00 |
10:24:19.19 |
+11:59:48.4 |
HIP 50802 |
30.33 |
| 2026-05-26 00:00 |
10:24:24.80 |
+11:58:55.8 |
HIP 50802 |
31.90 |
| 2026-05-26 12:00 |
10:24:30.58 |
+11:58:02.3 |
HIP 50802 |
33.52 |
| 2026-05-27 00:00 |
10:24:36.53 |
+11:57:07.8 |
HIP 50802 |
35.19 |
| 2026-05-27 12:00 |
10:24:42.66 |
+11:56:12.5 |
HIP 50802 |
36.92 |
| 2026-05-28 00:00 |
10:24:48.96 |
+11:55:16.2 |
HIP 50802 |
38.68 |
| 2026-05-28 12:00 |
10:24:55.42 |
+11:54:19.0 |
HIP 50802 |
40.50 |
| 2026-05-29 00:00 |
10:25:02.06 |
+11:53:21.0 |
HIP 50802 |
42.36 |
| 2026-05-29 12:00 |
10:25:08.86 |
+11:52:22.0 |
HIP 51120 |
43.07 |
| 2026-05-30 00:00 |
10:25:15.83 |
+11:51:22.1 |
HIP 51120 |
43.10 |
| 2026-05-30 12:00 |
10:25:22.97 |
+11:50:21.4 |
HIP 51179 |
41.21 |
| 2026-05-31 00:00 |
10:25:30.27 |
+11:49:19.7 |
HIP 51179 |
39.27 |
| 2026-05-31 12:00 |
10:25:37.73 |
+11:48:17.2 |
HIP 51179 |
37.31 |
| 2026-06-01 00:00 |
10:25:45.36 |
+11:47:13.9 |
HIP 51179 |
35.34 |
| 2026-06-01 12:00 |
10:25:53.14 |
+11:46:09.6 |
HIP 51179 |
33.35 |
| 2026-06-02 00:00 |
10:26:01.09 |
+11:45:04.5 |
HIP 51179 |
31.35 |