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) |
| 2026-07-29 00:00 |
17:12:27.96 |
+22:27:28.0 |
HIP 84095 |
20.42 |
| 2026-07-29 12:00 |
17:12:26.09 |
+22:27:05.6 |
HIP 84095 |
20.45 |
| 2026-07-30 00:00 |
17:12:24.24 |
+22:26:43.0 |
HIP 84095 |
20.51 |
| 2026-07-30 12:00 |
17:12:22.40 |
+22:26:20.3 |
HIP 84095 |
20.58 |
| 2026-07-31 00:00 |
17:12:20.59 |
+22:25:57.4 |
HIP 84095 |
20.68 |
| 2026-07-31 12:00 |
17:12:18.79 |
+22:25:34.3 |
HIP 84095 |
20.79 |
| 2026-08-01 00:00 |
17:12:17.02 |
+22:25:11.0 |
HIP 84095 |
20.93 |
| 2026-08-01 12:00 |
17:12:15.26 |
+22:24:47.5 |
HIP 84095 |
21.08 |
| 2026-08-02 00:00 |
17:12:13.53 |
+22:24:23.9 |
HIP 84095 |
21.25 |
| 2026-08-02 12:00 |
17:12:11.82 |
+22:24:00.0 |
HIP 84095 |
21.44 |
| 2026-08-03 00:00 |
17:12:10.13 |
+22:23:36.1 |
HIP 84095 |
21.65 |
| 2026-08-03 12:00 |
17:12:08.46 |
+22:23:11.9 |
HIP 84095 |
21.87 |
| 2026-08-04 00:00 |
17:12:06.81 |
+22:22:47.6 |
HIP 84095 |
22.11 |
| 2026-08-04 12:00 |
17:12:05.18 |
+22:22:23.1 |
HIP 84095 |
22.37 |
| 2026-08-05 00:00 |
17:12:03.57 |
+22:21:58.4 |
HIP 84095 |
22.64 |
| 2026-08-05 12:00 |
17:12:01.99 |
+22:21:33.6 |
HIP 84095 |
22.92 |
| 2026-08-06 00:00 |
17:12:00.42 |
+22:21:08.6 |
HIP 84095 |
23.22 |
| 2026-08-06 12:00 |
17:11:58.88 |
+22:20:43.4 |
HIP 84095 |
23.53 |
| 2026-08-07 00:00 |
17:11:57.36 |
+22:20:18.1 |
HIP 84095 |
23.86 |
| 2026-08-07 12:00 |
17:11:55.87 |
+22:19:52.6 |
HIP 84095 |
24.19 |
| 2026-08-08 00:00 |
17:11:54.39 |
+22:19:27.0 |
HIP 84095 |
24.54 |
| 2026-08-08 12:00 |
17:11:52.94 |
+22:19:01.2 |
HIP 84095 |
24.90 |
| 2026-08-09 00:00 |
17:11:51.50 |
+22:18:35.3 |
HIP 84095 |
25.27 |
| 2026-08-09 12:00 |
17:11:50.10 |
+22:18:09.2 |
HIP 84095 |
25.64 |
| 2026-08-10 00:00 |
17:11:48.71 |
+22:17:42.9 |
HIP 84095 |
26.03 |
| 2026-08-10 12:00 |
17:11:47.35 |
+22:17:16.5 |
HIP 84095 |
26.42 |
| 2026-08-11 00:00 |
17:11:46.01 |
+22:16:50.0 |
HIP 83974 |
26.45 |
| 2026-08-11 12:00 |
17:11:44.69 |
+22:16:23.3 |
HIP 83974 |
26.04 |
| 2026-08-12 00:00 |
17:11:43.40 |
+22:15:56.5 |
HIP 83974 |
25.63 |
| 2026-08-12 12:00 |
17:11:42.13 |
+22:15:29.5 |
HIP 83974 |
25.23 |
| 2026-08-13 00:00 |
17:11:40.88 |
+22:15:02.4 |
HIP 83974 |
24.84 |
| 2026-08-13 12:00 |
17:11:39.66 |
+22:14:35.2 |
HIP 83974 |
24.46 |
| 2026-08-14 00:00 |
17:11:38.46 |
+22:14:07.8 |
HIP 83974 |
24.10 |
| 2026-08-14 12:00 |
17:11:37.28 |
+22:13:40.3 |
HIP 83974 |
23.74 |
| 2026-08-15 00:00 |
17:11:36.13 |
+22:13:12.7 |
HIP 83974 |
23.40 |
| 2026-08-15 12:00 |
17:11:35.00 |
+22:12:45.0 |
HIP 83974 |
23.06 |
| 2026-08-16 00:00 |
17:11:33.90 |
+22:12:17.1 |
HIP 83974 |
22.74 |
| 2026-08-16 12:00 |
17:11:32.82 |
+22:11:49.1 |
HIP 83974 |
22.44 |
| 2026-08-17 00:00 |
17:11:31.76 |
+22:11:20.9 |
HIP 83974 |
22.15 |
| 2026-08-17 12:00 |
17:11:30.73 |
+22:10:52.7 |
HIP 83974 |
21.87 |
| 2026-08-18 00:00 |
17:11:29.72 |
+22:10:24.3 |
HIP 83974 |
21.61 |
| 2026-08-18 12:00 |
17:11:28.74 |
+22:09:55.9 |
HIP 83974 |
21.36 |
| 2026-08-19 00:00 |
17:11:27.78 |
+22:09:27.3 |
HIP 83974 |
21.13 |