메타데이터
| 항목 |
값 |
| Designation |
237P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-05-14T13:55:38.369280Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T10:11:19Z |
| Obs used |
2268 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
21.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-12-09.0000000 |
| e |
0.43436596 |
| q (au) |
1.986663 |
| a (au) |
3.512276 |
| i (deg) |
14.014625 |
| Ω (om, deg) |
245.378783 |
| ω (w, deg) |
25.235831 |
| M (ma, deg) |
281.901559 |
밝기
산란 + 전체 선형
$$
M_a = (8.535 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.535 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2022-02-04 |
2023-05-14 |
+9.5015 |
-3.783 |
| 2023-05-14 |
2023-10-17 |
+15.2071 |
-5.277 |
| 2023-10-17 |
2024-11-21 |
+3.9569 |
-1.564 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
04:33:43.23 |
+18:32:47.0 |
HIP 21350 |
18.31 |
| 2026-03-26 12:00 |
04:34:00.76 |
+18:33:13.9 |
HIP 21350 |
14.93 |
| 2026-03-27 00:00 |
04:34:18.42 |
+18:33:40.8 |
HIP 21350 |
12.04 |
| 2026-03-27 12:00 |
04:34:36.20 |
+18:34:07.9 |
HIP 21350 |
10.12 |
| 2026-03-28 00:00 |
04:34:54.12 |
+18:34:35.0 |
HIP 21350 |
9.78 |
| 2026-03-28 12:00 |
04:35:12.16 |
+18:35:02.3 |
HIP 21350 |
11.22 |
| 2026-03-29 00:00 |
04:35:30.32 |
+18:35:29.7 |
HIP 21350 |
13.92 |
| 2026-03-29 12:00 |
04:35:48.61 |
+18:35:57.1 |
HIP 21467 |
14.91 |
| 2026-03-30 00:00 |
04:36:07.02 |
+18:36:24.7 |
HIP 21467 |
11.47 |
| 2026-03-30 12:00 |
04:36:25.56 |
+18:36:52.3 |
HIP 21467 |
8.90 |
| 2026-03-31 00:00 |
04:36:44.21 |
+18:37:20.0 |
HIP 21467 |
8.11 |
| 2026-03-31 12:00 |
04:37:02.99 |
+18:37:47.8 |
HIP 21517 |
5.92 |
| 2026-04-01 00:00 |
04:37:21.88 |
+18:38:15.6 |
HIP 21517 |
5.92 |
| 2026-04-01 12:00 |
04:37:40.90 |
+18:38:43.5 |
HIP 21517 |
8.72 |
| 2026-04-02 00:00 |
04:38:00.03 |
+18:39:11.5 |
HIP 21621 |
8.80 |
| 2026-04-02 12:00 |
04:38:19.27 |
+18:39:39.5 |
HIP 21621 |
5.18 |
| 2026-04-03 00:00 |
04:38:38.64 |
+18:40:07.5 |
HIP 21621 |
4.29 |
| 2026-04-03 12:00 |
04:38:58.11 |
+18:40:35.6 |
HIP 21621 |
7.27 |
| 2026-04-04 00:00 |
04:39:17.70 |
+18:41:03.8 |
HIP 21621 |
11.44 |
| 2026-04-04 12:00 |
04:39:37.41 |
+18:41:31.9 |
HIP 21621 |
15.91 |
| 2026-04-05 00:00 |
04:39:57.22 |
+18:42:00.1 |
HIP 21621 |
20.50 |
| 2026-04-05 12:00 |
04:40:17.15 |
+18:42:28.3 |
HIP 21621 |
25.17 |
| 2026-04-06 00:00 |
04:40:37.19 |
+18:42:56.5 |
HIP 21621 |
29.88 |
| 2026-04-06 12:00 |
04:40:57.33 |
+18:43:24.7 |
HIP 21923 |
27.07 |
| 2026-04-07 00:00 |
04:41:17.58 |
+18:43:52.9 |
HIP 21923 |
22.28 |
| 2026-04-07 12:00 |
04:41:37.95 |
+18:44:21.2 |
HIP 21923 |
17.48 |
| 2026-04-08 00:00 |
04:41:58.41 |
+18:44:49.4 |
HIP 21923 |
12.70 |
| 2026-04-08 12:00 |
04:42:18.99 |
+18:45:17.6 |
HIP 21923 |
8.00 |
| 2026-04-09 00:00 |
04:42:39.67 |
+18:45:45.8 |
HIP 21923 |
3.80 |
| 2026-04-09 12:00 |
04:43:00.45 |
+18:46:14.0 |
HIP 21946 |
3.53 |
| 2026-04-10 00:00 |
04:43:21.34 |
+18:46:42.1 |
HIP 21946 |
6.19 |
| 2026-04-10 12:00 |
04:43:42.33 |
+18:47:10.2 |
HIP 21946 |
10.67 |
| 2026-04-11 00:00 |
04:44:03.42 |
+18:47:38.3 |
HIP 21946 |
15.49 |
| 2026-04-11 12:00 |
04:44:24.61 |
+18:48:06.4 |
HIP 21946 |
20.43 |
| 2026-04-12 00:00 |
04:44:45.90 |
+18:48:34.4 |
HIP 22161 |
18.75 |
| 2026-04-12 12:00 |
04:45:07.29 |
+18:49:02.3 |
HIP 22161 |
13.72 |
| 2026-04-13 00:00 |
04:45:28.78 |
+18:49:30.2 |
HIP 22161 |
8.72 |
| 2026-04-13 12:00 |
04:45:50.36 |
+18:49:58.0 |
HIP 22161 |
3.98 |
| 2026-04-14 00:00 |
04:46:12.04 |
+18:50:25.8 |
HIP 22161 |
2.90 |
| 2026-04-14 12:00 |
04:46:33.82 |
+18:50:53.5 |
HIP 22161 |
7.37 |
| 2026-04-15 00:00 |
04:46:55.69 |
+18:51:21.1 |
HIP 22176 |
11.73 |
| 2026-04-15 12:00 |
04:47:17.66 |
+18:51:48.6 |
HIP 22176 |
16.34 |
| 2026-04-16 00:00 |
04:47:39.72 |
+18:52:16.1 |
HIP 22349 |
17.62 |