메타데이터
| 항목 |
값 |
| Designation |
C/2002 A2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-12-05T15:58:53.768640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:12Z |
| Obs used |
204 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
12.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-04-19.0000000 |
| e |
0.72650481 |
| q (au) |
4.707082 |
| a (au) |
17.210839 |
| i (deg) |
14.054928 |
| Ω (om, deg) |
81.928817 |
| ω (w, deg) |
19.264638 |
| M (ma, deg) |
1.854331 |
밝기
산란 + 전체 선형
$$
M_a = (6.536 + 5.031\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.536 |
| n |
5.031 |
| gf |
1.000 |
| gb |
-0.931 |
| 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) |
| 2026-03-26 00:00 |
18:07:08.27 |
-25:31:17.0 |
HIP 88798 |
6.62 |
| 2026-03-26 12:00 |
18:07:08.55 |
-25:31:21.2 |
HIP 88798 |
6.53 |
| 2026-03-27 00:00 |
18:07:08.79 |
-25:31:25.4 |
HIP 88798 |
6.45 |
| 2026-03-27 12:00 |
18:07:08.99 |
-25:31:29.7 |
HIP 88798 |
6.38 |
| 2026-03-28 00:00 |
18:07:09.15 |
-25:31:33.9 |
HIP 88798 |
6.32 |
| 2026-03-28 12:00 |
18:07:09.26 |
-25:31:38.1 |
HIP 88798 |
6.27 |
| 2026-03-29 00:00 |
18:07:09.33 |
-25:31:42.4 |
HIP 88798 |
6.22 |
| 2026-03-29 12:00 |
18:07:09.36 |
-25:31:46.6 |
HIP 88798 |
6.19 |
| 2026-03-30 00:00 |
18:07:09.34 |
-25:31:50.9 |
HIP 88798 |
6.17 |
| 2026-03-30 12:00 |
18:07:09.28 |
-25:31:55.2 |
HIP 88798 |
6.15 |
| 2026-03-31 00:00 |
18:07:09.18 |
-25:31:59.5 |
HIP 88798 |
6.15 |
| 2026-03-31 12:00 |
18:07:09.04 |
-25:32:03.7 |
HIP 88798 |
6.15 |
| 2026-04-01 00:00 |
18:07:08.85 |
-25:32:08.0 |
HIP 88798 |
6.17 |
| 2026-04-01 12:00 |
18:07:08.62 |
-25:32:12.3 |
HIP 88798 |
6.19 |
| 2026-04-02 00:00 |
18:07:08.34 |
-25:32:16.6 |
HIP 88798 |
6.23 |
| 2026-04-02 12:00 |
18:07:08.02 |
-25:32:21.0 |
HIP 88798 |
6.28 |
| 2026-04-03 00:00 |
18:07:07.67 |
-25:32:25.3 |
HIP 88798 |
6.33 |
| 2026-04-03 12:00 |
18:07:07.26 |
-25:32:29.6 |
HIP 88798 |
6.40 |
| 2026-04-04 00:00 |
18:07:06.82 |
-25:32:33.9 |
HIP 88798 |
6.48 |
| 2026-04-04 12:00 |
18:07:06.33 |
-25:32:38.2 |
HIP 88798 |
6.57 |
| 2026-04-05 00:00 |
18:07:05.80 |
-25:32:42.6 |
HIP 88798 |
6.67 |
| 2026-04-05 12:00 |
18:07:05.23 |
-25:32:46.9 |
HIP 88798 |
6.78 |
| 2026-04-06 00:00 |
18:07:04.61 |
-25:32:51.3 |
HIP 88798 |
6.90 |
| 2026-04-06 12:00 |
18:07:03.95 |
-25:32:55.6 |
HIP 88798 |
7.03 |
| 2026-04-07 00:00 |
18:07:03.25 |
-25:33:00.0 |
HIP 88798 |
7.18 |
| 2026-04-07 12:00 |
18:07:02.51 |
-25:33:04.3 |
HIP 88798 |
7.33 |
| 2026-04-08 00:00 |
18:07:01.72 |
-25:33:08.7 |
HIP 88798 |
7.49 |
| 2026-04-08 12:00 |
18:07:00.90 |
-25:33:13.0 |
HIP 88798 |
7.67 |
| 2026-04-09 00:00 |
18:07:00.02 |
-25:33:17.4 |
HIP 88798 |
7.86 |
| 2026-04-09 12:00 |
18:06:59.11 |
-25:33:21.8 |
HIP 88798 |
8.05 |
| 2026-04-10 00:00 |
18:06:58.16 |
-25:33:26.2 |
HIP 88798 |
8.26 |
| 2026-04-10 12:00 |
18:06:57.16 |
-25:33:30.5 |
HIP 88798 |
8.48 |
| 2026-04-11 00:00 |
18:06:56.12 |
-25:33:34.9 |
HIP 88798 |
8.70 |
| 2026-04-11 12:00 |
18:06:55.04 |
-25:33:39.3 |
HIP 88798 |
8.94 |
| 2026-04-12 00:00 |
18:06:53.92 |
-25:33:43.7 |
HIP 88798 |
9.19 |
| 2026-04-12 12:00 |
18:06:52.76 |
-25:33:48.0 |
HIP 88798 |
9.45 |
| 2026-04-13 00:00 |
18:06:51.55 |
-25:33:52.4 |
HIP 88798 |
9.72 |
| 2026-04-13 12:00 |
18:06:50.30 |
-25:33:56.8 |
HIP 88798 |
10.00 |
| 2026-04-14 00:00 |
18:06:49.01 |
-25:34:01.2 |
HIP 88798 |
10.29 |
| 2026-04-14 12:00 |
18:06:47.68 |
-25:34:05.5 |
HIP 88798 |
10.59 |
| 2026-04-15 00:00 |
18:06:46.31 |
-25:34:09.9 |
HIP 88798 |
10.90 |
| 2026-04-15 12:00 |
18:06:44.90 |
-25:34:14.3 |
HIP 88798 |
11.21 |
| 2026-04-16 00:00 |
18:06:43.44 |
-25:34:18.7 |
HIP 88798 |
11.54 |