메타데이터
| 항목 |
값 |
| Designation |
C/2002 C2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-10T19:34:33.844800Z |
| Orbit solution date (soln_date, UTC) |
2026-07-06T12:12:22Z |
| Obs used |
209 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
10.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-05-24.0000000 |
| e |
0.99964080 |
| q (au) |
3.253749 |
| a (au) |
9058.244523 |
| i (deg) |
104.881330 |
| Ω (om, deg) |
242.956006 |
| ω (w, deg) |
159.933865 |
| M (ma, deg) |
0.000049 |
밝기
산란 + 전체 선형
$$
M_a = (8.703 + 5.569\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.703 |
| n |
5.569 |
| gf |
0.999 |
| gb |
-0.626 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
16:27:30.46 |
-72:28:52.1 |
HIP 80410 |
13.86 |
| 2026-07-29 12:00 |
16:27:25.72 |
-72:28:21.3 |
HIP 80410 |
13.79 |
| 2026-07-30 00:00 |
16:27:21.05 |
-72:27:50.5 |
HIP 80410 |
13.76 |
| 2026-07-30 12:00 |
16:27:16.44 |
-72:27:19.5 |
HIP 80410 |
13.75 |
| 2026-07-31 00:00 |
16:27:11.90 |
-72:26:48.4 |
HIP 80410 |
13.78 |
| 2026-07-31 12:00 |
16:27:07.43 |
-72:26:17.3 |
HIP 80410 |
13.85 |
| 2026-08-01 00:00 |
16:27:03.03 |
-72:25:46.0 |
HIP 80410 |
13.94 |
| 2026-08-01 12:00 |
16:26:58.70 |
-72:25:14.6 |
HIP 80410 |
14.07 |
| 2026-08-02 00:00 |
16:26:54.44 |
-72:24:43.1 |
HIP 80410 |
14.22 |
| 2026-08-02 12:00 |
16:26:50.25 |
-72:24:11.6 |
HIP 80410 |
14.41 |
| 2026-08-03 00:00 |
16:26:46.13 |
-72:23:39.9 |
HIP 80410 |
14.62 |
| 2026-08-03 12:00 |
16:26:42.07 |
-72:23:08.2 |
HIP 80410 |
14.86 |
| 2026-08-04 00:00 |
16:26:38.09 |
-72:22:36.3 |
HIP 80410 |
15.12 |
| 2026-08-04 12:00 |
16:26:34.18 |
-72:22:04.4 |
HIP 80410 |
15.41 |
| 2026-08-05 00:00 |
16:26:30.34 |
-72:21:32.4 |
HIP 80410 |
15.72 |
| 2026-08-05 12:00 |
16:26:26.57 |
-72:21:00.3 |
HIP 80410 |
16.05 |
| 2026-08-06 00:00 |
16:26:22.87 |
-72:20:28.1 |
HIP 80410 |
16.40 |
| 2026-08-06 12:00 |
16:26:19.24 |
-72:19:55.9 |
HIP 80410 |
16.77 |
| 2026-08-07 00:00 |
16:26:15.68 |
-72:19:23.5 |
HIP 80410 |
17.15 |
| 2026-08-07 12:00 |
16:26:12.20 |
-72:18:51.1 |
HIP 80410 |
17.55 |
| 2026-08-08 00:00 |
16:26:08.78 |
-72:18:18.7 |
HIP 80533 |
17.51 |
| 2026-08-08 12:00 |
16:26:05.44 |
-72:17:46.1 |
HIP 80533 |
17.00 |
| 2026-08-09 00:00 |
16:26:02.17 |
-72:17:13.5 |
HIP 80533 |
16.48 |
| 2026-08-09 12:00 |
16:25:58.97 |
-72:16:40.9 |
HIP 80533 |
15.97 |
| 2026-08-10 00:00 |
16:25:55.85 |
-72:16:08.1 |
HIP 80533 |
15.46 |
| 2026-08-10 12:00 |
16:25:52.80 |
-72:15:35.4 |
HIP 80533 |
14.96 |
| 2026-08-11 00:00 |
16:25:49.82 |
-72:15:02.5 |
HIP 80533 |
14.47 |
| 2026-08-11 12:00 |
16:25:46.91 |
-72:14:29.6 |
HIP 80533 |
13.97 |
| 2026-08-12 00:00 |
16:25:44.08 |
-72:13:56.7 |
HIP 80533 |
13.49 |
| 2026-08-12 12:00 |
16:25:41.32 |
-72:13:23.7 |
HIP 80533 |
13.01 |
| 2026-08-13 00:00 |
16:25:38.63 |
-72:12:50.7 |
HIP 80533 |
12.54 |
| 2026-08-13 12:00 |
16:25:36.02 |
-72:12:17.6 |
HIP 80533 |
12.08 |
| 2026-08-14 00:00 |
16:25:33.48 |
-72:11:44.5 |
HIP 80533 |
11.62 |
| 2026-08-14 12:00 |
16:25:31.01 |
-72:11:11.3 |
HIP 80533 |
11.17 |
| 2026-08-15 00:00 |
16:25:28.62 |
-72:10:38.2 |
HIP 80533 |
10.74 |
| 2026-08-15 12:00 |
16:25:26.30 |
-72:10:04.9 |
HIP 80533 |
10.32 |
| 2026-08-16 00:00 |
16:25:24.06 |
-72:09:31.7 |
HIP 80533 |
9.91 |
| 2026-08-16 12:00 |
16:25:21.88 |
-72:08:58.4 |
HIP 80533 |
9.51 |
| 2026-08-17 00:00 |
16:25:19.79 |
-72:08:25.1 |
HIP 80533 |
9.13 |
| 2026-08-17 12:00 |
16:25:17.76 |
-72:07:51.8 |
HIP 80533 |
8.77 |
| 2026-08-18 00:00 |
16:25:15.81 |
-72:07:18.5 |
HIP 80533 |
8.43 |
| 2026-08-18 12:00 |
16:25:13.93 |
-72:06:45.1 |
HIP 80533 |
8.11 |
| 2026-08-19 00:00 |
16:25:12.13 |
-72:06:11.8 |
HIP 80533 |
7.81 |