메타데이터
| 항목 |
값 |
| Designation |
231P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-05-16T10:25:55.799040Z |
| Orbit solution date (soln_date, UTC) |
2023-09-12T03:13:15Z |
| Obs used |
573 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
20.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-06-21.0000000 |
| e |
0.24682623 |
| q (au) |
3.032307 |
| a (au) |
4.026040 |
| i (deg) |
12.325761 |
| Ω (om, deg) |
133.080846 |
| ω (w, deg) |
42.426644 |
| M (ma, deg) |
48.994036 |
밝기
산란 + 전체 선형
$$
M_a = (15.244 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.244 |
| n |
2.000 |
| gf |
0.898 |
| gb |
-0.500 |
| k |
0.897 |
| δ90 |
3.500 |
| 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 |
05:01:56.81 |
+14:49:42.1 |
HIP 23496 |
16.46 |
| 2026-03-26 12:00 |
05:02:20.19 |
+14:51:44.0 |
HIP 23496 |
11.88 |
| 2026-03-27 00:00 |
05:02:43.76 |
+14:53:45.5 |
HIP 23496 |
9.11 |
| 2026-03-27 12:00 |
05:03:07.51 |
+14:55:46.6 |
HIP 23496 |
9.89 |
| 2026-03-28 00:00 |
05:03:31.44 |
+14:57:47.5 |
HIP 23496 |
13.68 |
| 2026-03-28 12:00 |
05:03:55.54 |
+14:59:47.9 |
HIP 23621 |
13.89 |
| 2026-03-29 00:00 |
05:04:19.82 |
+15:01:48.0 |
HIP 23621 |
11.55 |
| 2026-03-29 12:00 |
05:04:44.28 |
+15:03:47.8 |
HIP 23621 |
12.26 |
| 2026-03-30 00:00 |
05:05:08.91 |
+15:05:47.1 |
HIP 23702 |
7.80 |
| 2026-03-30 12:00 |
05:05:33.72 |
+15:07:46.1 |
HIP 23702 |
2.54 |
| 2026-03-31 00:00 |
05:05:58.69 |
+15:09:44.7 |
HIP 23702 |
5.64 |
| 2026-03-31 12:00 |
05:06:23.84 |
+15:11:42.9 |
HIP 23702 |
11.77 |
| 2026-04-01 00:00 |
05:06:49.16 |
+15:13:40.7 |
HIP 23702 |
18.11 |
| 2026-04-01 12:00 |
05:07:14.64 |
+15:15:38.2 |
HIP 23939 |
23.14 |
| 2026-04-02 00:00 |
05:07:40.29 |
+15:17:35.2 |
HIP 23939 |
18.77 |
| 2026-04-02 12:00 |
05:08:06.11 |
+15:19:31.8 |
HIP 23939 |
15.90 |
| 2026-04-03 00:00 |
05:08:32.09 |
+15:21:28.0 |
HIP 23939 |
15.43 |
| 2026-04-03 12:00 |
05:08:58.24 |
+15:23:23.8 |
HIP 24010 |
16.30 |
| 2026-04-04 00:00 |
05:09:24.55 |
+15:25:19.1 |
HIP 24010 |
11.32 |
| 2026-04-04 12:00 |
05:09:51.03 |
+15:27:14.0 |
HIP 24010 |
8.88 |
| 2026-04-05 00:00 |
05:10:17.66 |
+15:29:08.5 |
HIP 24010 |
10.90 |
| 2026-04-05 12:00 |
05:10:44.46 |
+15:31:02.5 |
HIP 24104 |
14.31 |
| 2026-04-06 00:00 |
05:11:11.41 |
+15:32:56.1 |
HIP 24104 |
17.85 |
| 2026-04-06 12:00 |
05:11:38.53 |
+15:34:49.3 |
HIP 24104 |
22.91 |
| 2026-04-07 00:00 |
05:12:05.80 |
+15:36:42.0 |
HIP 24197 |
26.68 |
| 2026-04-07 12:00 |
05:12:33.22 |
+15:38:34.2 |
HIP 24197 |
27.18 |
| 2026-04-08 00:00 |
05:13:00.81 |
+15:40:25.9 |
HIP 24197 |
29.34 |
| 2026-04-08 12:00 |
05:13:28.54 |
+15:42:17.2 |
HIP 24508 |
28.58 |
| 2026-04-09 00:00 |
05:13:56.43 |
+15:44:08.0 |
HIP 24508 |
22.42 |
| 2026-04-09 12:00 |
05:14:24.48 |
+15:45:58.3 |
HIP 24508 |
16.86 |
| 2026-04-10 00:00 |
05:14:52.67 |
+15:47:48.2 |
HIP 24508 |
12.78 |
| 2026-04-10 12:00 |
05:15:21.02 |
+15:49:37.5 |
HIP 24508 |
11.87 |
| 2026-04-11 00:00 |
05:15:49.51 |
+15:51:26.3 |
HIP 24524 |
12.66 |
| 2026-04-11 12:00 |
05:16:18.16 |
+15:53:14.6 |
HIP 24524 |
13.73 |
| 2026-04-12 00:00 |
05:16:46.95 |
+15:55:02.5 |
HIP 24524 |
17.87 |
| 2026-04-12 12:00 |
05:17:15.89 |
+15:56:49.8 |
HIP 24524 |
23.54 |
| 2026-04-13 00:00 |
05:17:44.97 |
+15:58:36.6 |
HIP 24634 |
24.40 |
| 2026-04-13 12:00 |
05:18:14.20 |
+16:00:22.8 |
HIP 24850 |
24.30 |
| 2026-04-14 00:00 |
05:18:43.58 |
+16:02:08.5 |
HIP 24850 |
20.05 |
| 2026-04-14 12:00 |
05:19:13.10 |
+16:03:53.7 |
HIP 24850 |
17.85 |
| 2026-04-15 00:00 |
05:19:42.76 |
+16:05:38.4 |
HIP 24850 |
18.50 |
| 2026-04-15 12:00 |
05:20:12.56 |
+16:07:22.5 |
HIP 24850 |
21.76 |
| 2026-04-16 00:00 |
05:20:42.50 |
+16:09:06.0 |
HIP 25018 |
22.50 |