메타데이터
| 항목 |
값 |
| Designation |
C/2002 A1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-11-27T13:19:30.161280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:12Z |
| Obs used |
124 |
| NEO |
- |
| M1 |
8.200 |
| K1 |
11.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-06-06.0000000 |
| e |
0.72578378 |
| q (au) |
4.710957 |
| a (au) |
17.179715 |
| i (deg) |
14.057508 |
| Ω (om, deg) |
81.807737 |
| ω (w, deg) |
18.909060 |
| M (ma, deg) |
2.636023 |
밝기
산란 + 전체 선형
$$
M_a = (9.195 + 3.997\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.195 |
| n |
3.997 |
| gf |
0.913 |
| gb |
-0.906 |
| k |
1.000 |
| δ90 |
3.685 |
| 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) |
| 2026-06-01 00:00 |
17:58:35.16 |
-25:29:14.7 |
HIP 88049 |
18.86 |
| 2026-06-01 12:00 |
17:58:30.90 |
-25:29:17.2 |
HIP 88049 |
19.23 |
| 2026-06-02 00:00 |
17:58:26.63 |
-25:29:19.7 |
HIP 88049 |
19.64 |
| 2026-06-02 12:00 |
17:58:22.35 |
-25:29:22.1 |
HIP 88049 |
20.09 |
| 2026-06-03 00:00 |
17:58:18.05 |
-25:29:24.5 |
HIP 88049 |
20.57 |
| 2026-06-03 12:00 |
17:58:13.73 |
-25:29:26.9 |
HIP 88049 |
21.09 |
| 2026-06-04 00:00 |
17:58:09.41 |
-25:29:29.2 |
HIP 88049 |
21.65 |
| 2026-06-04 12:00 |
17:58:05.07 |
-25:29:31.6 |
HIP 88049 |
22.23 |
| 2026-06-05 00:00 |
17:58:00.71 |
-25:29:33.9 |
HIP 88049 |
22.84 |
| 2026-06-05 12:00 |
17:57:56.35 |
-25:29:36.1 |
HIP 88049 |
23.48 |
| 2026-06-06 00:00 |
17:57:51.97 |
-25:29:38.3 |
HIP 88049 |
24.15 |
| 2026-06-06 12:00 |
17:57:47.58 |
-25:29:40.6 |
HIP 87809 |
23.42 |
| 2026-06-07 00:00 |
17:57:43.18 |
-25:29:42.7 |
HIP 87809 |
22.52 |
| 2026-06-07 12:00 |
17:57:38.77 |
-25:29:44.9 |
HIP 87809 |
21.63 |
| 2026-06-08 00:00 |
17:57:34.35 |
-25:29:47.0 |
HIP 87809 |
20.75 |
| 2026-06-08 12:00 |
17:57:29.92 |
-25:29:49.1 |
HIP 87809 |
19.88 |
| 2026-06-09 00:00 |
17:57:25.47 |
-25:29:51.1 |
HIP 87809 |
19.02 |
| 2026-06-09 12:00 |
17:57:21.02 |
-25:29:53.2 |
HIP 87809 |
18.17 |
| 2026-06-10 00:00 |
17:57:16.56 |
-25:29:55.2 |
HIP 87809 |
17.34 |
| 2026-06-10 12:00 |
17:57:12.09 |
-25:29:57.1 |
HIP 87809 |
16.52 |
| 2026-06-11 00:00 |
17:57:07.62 |
-25:29:59.1 |
HIP 87809 |
15.73 |
| 2026-06-11 12:00 |
17:57:03.13 |
-25:30:01.0 |
HIP 87809 |
14.97 |
| 2026-06-12 00:00 |
17:56:58.64 |
-25:30:02.9 |
HIP 87809 |
14.23 |
| 2026-06-12 12:00 |
17:56:54.14 |
-25:30:04.7 |
HIP 87809 |
13.53 |
| 2026-06-13 00:00 |
17:56:49.63 |
-25:30:06.6 |
HIP 87809 |
12.87 |
| 2026-06-13 12:00 |
17:56:45.12 |
-25:30:08.4 |
HIP 87809 |
12.25 |
| 2026-06-14 00:00 |
17:56:40.60 |
-25:30:10.1 |
HIP 87809 |
11.70 |
| 2026-06-14 12:00 |
17:56:36.08 |
-25:30:11.9 |
HIP 87809 |
11.21 |
| 2026-06-15 00:00 |
17:56:31.55 |
-25:30:13.6 |
HIP 87809 |
10.79 |
| 2026-06-15 12:00 |
17:56:27.02 |
-25:30:15.2 |
HIP 87809 |
10.46 |
| 2026-06-16 00:00 |
17:56:22.48 |
-25:30:16.9 |
HIP 87809 |
10.22 |
| 2026-06-16 12:00 |
17:56:17.94 |
-25:30:18.5 |
HIP 87809 |
10.08 |
| 2026-06-17 00:00 |
17:56:13.40 |
-25:30:20.1 |
HIP 87809 |
10.04 |
| 2026-06-17 12:00 |
17:56:08.85 |
-25:30:21.6 |
HIP 87809 |
10.11 |
| 2026-06-18 00:00 |
17:56:04.30 |
-25:30:23.2 |
HIP 87809 |
10.28 |
| 2026-06-18 12:00 |
17:55:59.75 |
-25:30:24.7 |
HIP 87809 |
10.55 |
| 2026-06-19 00:00 |
17:55:55.20 |
-25:30:26.1 |
HIP 87809 |
10.91 |
| 2026-06-19 12:00 |
17:55:50.65 |
-25:30:27.6 |
HIP 87809 |
11.35 |
| 2026-06-20 00:00 |
17:55:46.09 |
-25:30:29.0 |
HIP 87809 |
11.86 |
| 2026-06-20 12:00 |
17:55:41.54 |
-25:30:30.4 |
HIP 87809 |
12.44 |
| 2026-06-21 00:00 |
17:55:36.98 |
-25:30:31.7 |
HIP 87809 |
13.08 |
| 2026-06-21 12:00 |
17:55:32.43 |
-25:30:33.0 |
HIP 87809 |
13.76 |
| 2026-06-22 00:00 |
17:55:27.88 |
-25:30:34.3 |
HIP 87809 |
14.48 |