메타데이터
| 항목 |
값 |
| Designation |
C/2014 AA52 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-02-27T15:22:13.177920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:46Z |
| Obs used |
399 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-10-20.0000000 |
| e |
1.00042389 |
| q (au) |
2.002638 |
| a (au) |
-4724.452107 |
| i (deg) |
105.211201 |
| Ω (om, deg) |
330.493052 |
| ω (w, deg) |
292.259254 |
| M (ma, deg) |
-0.000397 |
밝기
산란 + 전체 선형
$$
M_a = (11.277 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.277 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
9.999 |
| 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 |
18:16:23.09 |
+50:10:43.7 |
HIP 89521 |
21.47 |
| 2026-05-12 12:00 |
18:16:17.48 |
+50:11:29.8 |
HIP 89521 |
20.59 |
| 2026-05-13 00:00 |
18:16:11.82 |
+50:12:15.5 |
HIP 89521 |
19.75 |
| 2026-05-13 12:00 |
18:16:06.13 |
+50:13:00.8 |
HIP 89521 |
18.95 |
| 2026-05-14 00:00 |
18:16:00.39 |
+50:13:45.7 |
HIP 89521 |
18.21 |
| 2026-05-14 12:00 |
18:15:54.61 |
+50:14:30.1 |
HIP 89521 |
17.51 |
| 2026-05-15 00:00 |
18:15:48.79 |
+50:15:14.1 |
HIP 89521 |
16.88 |
| 2026-05-15 12:00 |
18:15:42.93 |
+50:15:57.6 |
HIP 89521 |
16.33 |
| 2026-05-16 00:00 |
18:15:37.02 |
+50:16:40.7 |
HIP 89521 |
15.84 |
| 2026-05-16 12:00 |
18:15:31.08 |
+50:17:23.4 |
HIP 89521 |
15.45 |
| 2026-05-17 00:00 |
18:15:25.10 |
+50:18:05.5 |
HIP 89521 |
15.14 |
| 2026-05-17 12:00 |
18:15:19.07 |
+50:18:47.2 |
HIP 89521 |
14.94 |
| 2026-05-18 00:00 |
18:15:13.01 |
+50:19:28.5 |
HIP 89521 |
14.83 |
| 2026-05-18 12:00 |
18:15:06.91 |
+50:20:09.3 |
HIP 89521 |
14.83 |
| 2026-05-19 00:00 |
18:15:00.77 |
+50:20:49.6 |
HIP 89521 |
14.94 |
| 2026-05-19 12:00 |
18:14:54.59 |
+50:21:29.4 |
HIP 89521 |
15.14 |
| 2026-05-20 00:00 |
18:14:48.38 |
+50:22:08.8 |
HIP 89521 |
15.44 |
| 2026-05-20 12:00 |
18:14:42.13 |
+50:22:47.7 |
HIP 89521 |
15.84 |
| 2026-05-21 00:00 |
18:14:35.85 |
+50:23:26.0 |
HIP 89521 |
16.32 |
| 2026-05-21 12:00 |
18:14:29.53 |
+50:24:04.0 |
HIP 89521 |
16.88 |
| 2026-05-22 00:00 |
18:14:23.17 |
+50:24:41.4 |
HIP 89521 |
17.51 |
| 2026-05-22 12:00 |
18:14:16.78 |
+50:25:18.3 |
HIP 89521 |
18.21 |
| 2026-05-23 00:00 |
18:14:10.35 |
+50:25:54.8 |
HIP 89521 |
18.96 |
| 2026-05-23 12:00 |
18:14:03.90 |
+50:26:30.7 |
HIP 89521 |
19.76 |
| 2026-05-24 00:00 |
18:13:57.41 |
+50:27:06.2 |
HIP 89521 |
20.60 |
| 2026-05-24 12:00 |
18:13:50.88 |
+50:27:41.1 |
HIP 89521 |
21.49 |
| 2026-05-25 00:00 |
18:13:44.33 |
+50:28:15.6 |
HIP 89521 |
22.40 |
| 2026-05-25 12:00 |
18:13:37.74 |
+50:28:49.5 |
HIP 89521 |
23.35 |
| 2026-05-26 00:00 |
18:13:31.12 |
+50:29:23.0 |
HIP 89521 |
24.33 |
| 2026-05-26 12:00 |
18:13:24.48 |
+50:29:55.9 |
HIP 89092 |
24.40 |
| 2026-05-27 00:00 |
18:13:17.80 |
+50:30:28.3 |
HIP 89092 |
23.22 |
| 2026-05-27 12:00 |
18:13:11.09 |
+50:31:00.2 |
HIP 89092 |
22.04 |
| 2026-05-28 00:00 |
18:13:04.36 |
+50:31:31.6 |
HIP 89092 |
20.86 |
| 2026-05-28 12:00 |
18:12:57.59 |
+50:32:02.5 |
HIP 89092 |
19.68 |
| 2026-05-29 00:00 |
18:12:50.80 |
+50:32:32.9 |
HIP 89092 |
18.50 |
| 2026-05-29 12:00 |
18:12:43.98 |
+50:33:02.7 |
HIP 89092 |
17.32 |
| 2026-05-30 00:00 |
18:12:37.13 |
+50:33:32.0 |
HIP 89092 |
16.14 |
| 2026-05-30 12:00 |
18:12:30.26 |
+50:34:00.8 |
HIP 89092 |
14.95 |
| 2026-05-31 00:00 |
18:12:23.36 |
+50:34:29.1 |
HIP 89092 |
13.77 |
| 2026-05-31 12:00 |
18:12:16.43 |
+50:34:56.8 |
HIP 89092 |
12.60 |
| 2026-06-01 00:00 |
18:12:09.48 |
+50:35:24.0 |
HIP 89092 |
11.42 |
| 2026-06-01 12:00 |
18:12:02.51 |
+50:35:50.7 |
HIP 89092 |
10.24 |
| 2026-06-02 00:00 |
18:11:55.51 |
+50:36:16.9 |
HIP 89092 |
9.07 |