메타데이터
| 항목 |
값 |
| Designation |
C/2002 A3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-24T16:45:49.104000Z |
| Orbit solution date (soln_date, UTC) |
2026-07-06T12:12:22Z |
| Obs used |
287 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
10.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-08-10.0000000 |
| e |
1.00946881 |
| q (au) |
5.151613 |
| a (au) |
-544.061067 |
| i (deg) |
48.083389 |
| Ω (om, deg) |
136.526064 |
| ω (w, deg) |
329.529506 |
| M (ma, deg) |
0.008334 |
밝기
산란 + 전체 선형
$$
M_a = (2.473 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.473 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-09-20 00:00 |
17:11:19.16 |
+21:36:38.7 |
HIP 84000 |
17.48 |
| 2026-09-20 12:00 |
17:11:19.87 |
+21:36:07.3 |
HIP 84000 |
17.35 |
| 2026-09-21 00:00 |
17:11:20.59 |
+21:35:35.9 |
HIP 84000 |
17.24 |
| 2026-09-21 12:00 |
17:11:21.35 |
+21:35:04.6 |
HIP 84000 |
17.15 |
| 2026-09-22 00:00 |
17:11:22.13 |
+21:34:33.3 |
HIP 84000 |
17.08 |
| 2026-09-22 12:00 |
17:11:22.93 |
+21:34:02.0 |
HIP 84000 |
17.04 |
| 2026-09-23 00:00 |
17:11:23.76 |
+21:33:30.7 |
HIP 84000 |
17.02 |
| 2026-09-23 12:00 |
17:11:24.61 |
+21:32:59.5 |
HIP 84000 |
17.02 |
| 2026-09-24 00:00 |
17:11:25.49 |
+21:32:28.4 |
HIP 84000 |
17.05 |
| 2026-09-24 12:00 |
17:11:26.40 |
+21:31:57.2 |
HIP 84000 |
17.10 |
| 2026-09-25 00:00 |
17:11:27.33 |
+21:31:26.1 |
HIP 84000 |
17.18 |
| 2026-09-25 12:00 |
17:11:28.28 |
+21:30:55.1 |
HIP 84000 |
17.28 |
| 2026-09-26 00:00 |
17:11:29.26 |
+21:30:24.1 |
HIP 84000 |
17.40 |
| 2026-09-26 12:00 |
17:11:30.26 |
+21:29:53.2 |
HIP 84000 |
17.55 |
| 2026-09-27 00:00 |
17:11:31.29 |
+21:29:22.3 |
HIP 84137 |
17.60 |
| 2026-09-27 12:00 |
17:11:32.35 |
+21:28:51.5 |
HIP 84137 |
17.03 |
| 2026-09-28 00:00 |
17:11:33.42 |
+21:28:20.7 |
HIP 84137 |
16.46 |
| 2026-09-28 12:00 |
17:11:34.52 |
+21:27:50.0 |
HIP 84137 |
15.89 |
| 2026-09-29 00:00 |
17:11:35.65 |
+21:27:19.3 |
HIP 84137 |
15.32 |
| 2026-09-29 12:00 |
17:11:36.80 |
+21:26:48.7 |
HIP 84137 |
14.74 |
| 2026-09-30 00:00 |
17:11:37.98 |
+21:26:18.2 |
HIP 84137 |
14.16 |
| 2026-09-30 12:00 |
17:11:39.18 |
+21:25:47.7 |
HIP 84137 |
13.58 |
| 2026-10-01 00:00 |
17:11:40.40 |
+21:25:17.3 |
HIP 84137 |
13.00 |
| 2026-10-01 12:00 |
17:11:41.65 |
+21:24:47.0 |
HIP 84137 |
12.42 |
| 2026-10-02 00:00 |
17:11:42.92 |
+21:24:16.7 |
HIP 84137 |
11.84 |
| 2026-10-02 12:00 |
17:11:44.21 |
+21:23:46.5 |
HIP 84137 |
11.25 |
| 2026-10-03 00:00 |
17:11:45.53 |
+21:23:16.4 |
HIP 84137 |
10.66 |
| 2026-10-03 12:00 |
17:11:46.88 |
+21:22:46.3 |
HIP 84137 |
10.08 |
| 2026-10-04 00:00 |
17:11:48.24 |
+21:22:16.4 |
HIP 84137 |
9.49 |
| 2026-10-04 12:00 |
17:11:49.63 |
+21:21:46.5 |
HIP 84137 |
8.90 |
| 2026-10-05 00:00 |
17:11:51.05 |
+21:21:16.7 |
HIP 84137 |
8.31 |
| 2026-10-05 12:00 |
17:11:52.49 |
+21:20:47.0 |
HIP 84137 |
7.72 |
| 2026-10-06 00:00 |
17:11:53.95 |
+21:20:17.4 |
HIP 84137 |
7.13 |
| 2026-10-06 12:00 |
17:11:55.43 |
+21:19:47.9 |
HIP 84137 |
6.54 |
| 2026-10-07 00:00 |
17:11:56.94 |
+21:19:18.4 |
HIP 84137 |
5.96 |
| 2026-10-07 12:00 |
17:11:58.47 |
+21:18:49.1 |
HIP 84137 |
5.38 |
| 2026-10-08 00:00 |
17:12:00.03 |
+21:18:19.8 |
HIP 84137 |
4.80 |
| 2026-10-08 12:00 |
17:12:01.60 |
+21:17:50.7 |
HIP 84137 |
4.23 |
| 2026-10-09 00:00 |
17:12:03.20 |
+21:17:21.7 |
HIP 84137 |
3.68 |
| 2026-10-09 12:00 |
17:12:04.83 |
+21:16:52.7 |
HIP 84137 |
3.15 |
| 2026-10-10 00:00 |
17:12:06.47 |
+21:16:23.9 |
HIP 84137 |
2.66 |
| 2026-10-10 12:00 |
17:12:08.14 |
+21:15:55.1 |
HIP 84137 |
2.23 |
| 2026-10-11 00:00 |
17:12:09.83 |
+21:15:26.5 |
HIP 84137 |
1.92 |