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) |
| 2026-03-26 00:00 |
10:37:52.15 |
+11:26:25.3 |
HIP 51892 |
27.85 |
| 2026-03-26 12:00 |
10:37:33.42 |
+11:27:55.6 |
HIP 51892 |
23.04 |
| 2026-03-27 00:00 |
10:37:14.84 |
+11:29:24.7 |
HIP 51892 |
18.27 |
| 2026-03-27 12:00 |
10:36:56.42 |
+11:30:52.7 |
HIP 51892 |
13.56 |
| 2026-03-28 00:00 |
10:36:38.17 |
+11:32:19.5 |
HIP 51892 |
8.94 |
| 2026-03-28 12:00 |
10:36:20.09 |
+11:33:45.2 |
HIP 51892 |
4.52 |
| 2026-03-29 00:00 |
10:36:02.17 |
+11:35:09.6 |
HIP 51892 |
2.05 |
| 2026-03-29 12:00 |
10:35:44.42 |
+11:36:32.9 |
HIP 51892 |
5.48 |
| 2026-03-30 00:00 |
10:35:26.85 |
+11:37:55.0 |
HIP 51892 |
9.83 |
| 2026-03-30 12:00 |
10:35:09.44 |
+11:39:15.9 |
HIP 51892 |
14.23 |
| 2026-03-31 00:00 |
10:34:52.22 |
+11:40:35.5 |
HIP 51892 |
18.62 |
| 2026-03-31 12:00 |
10:34:35.17 |
+11:41:54.0 |
HIP 51892 |
22.98 |
| 2026-04-01 00:00 |
10:34:18.30 |
+11:43:11.2 |
HIP 51786 |
25.06 |
| 2026-04-01 12:00 |
10:34:01.61 |
+11:44:27.2 |
HIP 51786 |
25.61 |
| 2026-04-02 00:00 |
10:33:45.10 |
+11:45:42.0 |
HIP 51786 |
26.82 |
| 2026-04-02 12:00 |
10:33:28.78 |
+11:46:55.5 |
HIP 51786 |
28.60 |
| 2026-04-03 00:00 |
10:33:12.64 |
+11:48:07.8 |
HIP 51786 |
30.82 |
| 2026-04-03 12:00 |
10:32:56.69 |
+11:49:18.9 |
HIP 51786 |
33.37 |
| 2026-04-04 00:00 |
10:32:40.93 |
+11:50:28.7 |
HIP 51786 |
36.17 |
| 2026-04-04 12:00 |
10:32:25.36 |
+11:51:37.3 |
HIP 51786 |
39.15 |
| 2026-04-05 00:00 |
10:32:09.98 |
+11:52:44.6 |
HIP 51725 |
41.30 |
| 2026-04-05 12:00 |
10:31:54.80 |
+11:53:50.7 |
HIP 51360 |
40.39 |
| 2026-04-06 00:00 |
10:31:39.81 |
+11:54:55.5 |
HIP 51360 |
36.62 |
| 2026-04-06 12:00 |
10:31:25.01 |
+11:55:59.0 |
HIP 51360 |
32.92 |
| 2026-04-07 00:00 |
10:31:10.42 |
+11:57:01.3 |
HIP 51360 |
29.28 |
| 2026-04-07 12:00 |
10:30:56.02 |
+11:58:02.3 |
HIP 51360 |
25.72 |
| 2026-04-08 00:00 |
10:30:41.82 |
+11:59:02.0 |
HIP 51360 |
22.25 |
| 2026-04-08 12:00 |
10:30:27.82 |
+12:00:00.4 |
HIP 51360 |
18.89 |
| 2026-04-09 00:00 |
10:30:14.03 |
+12:00:57.6 |
HIP 51360 |
15.65 |
| 2026-04-09 12:00 |
10:30:00.44 |
+12:01:53.5 |
HIP 51360 |
12.62 |
| 2026-04-10 00:00 |
10:29:47.05 |
+12:02:48.1 |
HIP 51360 |
9.91 |
| 2026-04-10 12:00 |
10:29:33.87 |
+12:03:41.4 |
HIP 51360 |
7.79 |
| 2026-04-11 00:00 |
10:29:20.90 |
+12:04:33.4 |
HIP 51360 |
6.77 |
| 2026-04-11 12:00 |
10:29:08.13 |
+12:05:24.1 |
HIP 51360 |
7.23 |
| 2026-04-12 00:00 |
10:28:55.57 |
+12:06:13.6 |
HIP 51360 |
8.89 |
| 2026-04-12 12:00 |
10:28:43.23 |
+12:07:01.7 |
HIP 51360 |
11.19 |
| 2026-04-13 00:00 |
10:28:31.09 |
+12:07:48.6 |
HIP 51360 |
13.77 |
| 2026-04-13 12:00 |
10:28:19.17 |
+12:08:34.1 |
HIP 51360 |
16.47 |
| 2026-04-14 00:00 |
10:28:07.46 |
+12:09:18.4 |
HIP 51360 |
19.21 |
| 2026-04-14 12:00 |
10:27:55.96 |
+12:10:01.3 |
HIP 51184 |
19.22 |
| 2026-04-15 00:00 |
10:27:44.67 |
+12:10:43.0 |
HIP 51184 |
17.37 |
| 2026-04-15 12:00 |
10:27:33.60 |
+12:11:23.4 |
HIP 51184 |
15.85 |
| 2026-04-16 00:00 |
10:27:22.75 |
+12:12:02.5 |
HIP 51184 |
14.73 |