메타데이터
| 항목 |
값 |
| Designation |
C/2002 Q5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-11-19T04:48:24.062400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:20Z |
| Obs used |
571 |
| NEO |
- |
| M1 |
14.200 |
| K1 |
5.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-10-27.0000000 |
| e |
1.00157521 |
| q (au) |
1.242967 |
| a (au) |
-789.082357 |
| i (deg) |
149.164230 |
| Ω (om, deg) |
33.747198 |
| ω (w, deg) |
133.306477 |
| M (ma, deg) |
-0.001032 |
밝기
산란 + 전체 선형
$$
M_a = (11.974 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.974 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.951 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2002-08-28 |
2002-09-29 |
+21.0620 |
-4.420 |
| 2002-09-29 |
2002-11-04 |
-4.0688 |
-0.380 |
| 2002-12-25 |
2003-02-28 |
+2.5644 |
-3.204 |
| 2003-02-28 |
2003-05-30 |
-0.0497 |
-0.829 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
06:19:03.69 |
-04:03:58.9 |
HIP 30026 |
19.18 |
| 2026-05-12 12:00 |
06:19:05.45 |
-04:03:47.1 |
HIP 30026 |
18.97 |
| 2026-05-13 00:00 |
06:19:07.24 |
-04:03:35.4 |
HIP 30026 |
18.78 |
| 2026-05-13 12:00 |
06:19:09.03 |
-04:03:23.9 |
HIP 30026 |
18.59 |
| 2026-05-14 00:00 |
06:19:10.85 |
-04:03:12.4 |
HIP 30026 |
18.43 |
| 2026-05-14 12:00 |
06:19:12.67 |
-04:03:01.1 |
HIP 30026 |
18.27 |
| 2026-05-15 00:00 |
06:19:14.51 |
-04:02:49.9 |
HIP 30026 |
18.13 |
| 2026-05-15 12:00 |
06:19:16.36 |
-04:02:38.9 |
HIP 30026 |
18.01 |
| 2026-05-16 00:00 |
06:19:18.23 |
-04:02:27.9 |
HIP 30026 |
17.90 |
| 2026-05-16 12:00 |
06:19:20.11 |
-04:02:17.1 |
HIP 30026 |
17.81 |
| 2026-05-17 00:00 |
06:19:22.01 |
-04:02:06.4 |
HIP 30026 |
17.73 |
| 2026-05-17 12:00 |
06:19:23.91 |
-04:01:55.9 |
HIP 30026 |
17.67 |
| 2026-05-18 00:00 |
06:19:25.83 |
-04:01:45.5 |
HIP 30026 |
17.63 |
| 2026-05-18 12:00 |
06:19:27.76 |
-04:01:35.2 |
HIP 30026 |
17.60 |
| 2026-05-19 00:00 |
06:19:29.71 |
-04:01:25.0 |
HIP 30026 |
17.60 |
| 2026-05-19 12:00 |
06:19:31.67 |
-04:01:14.9 |
HIP 30026 |
17.61 |
| 2026-05-20 00:00 |
06:19:33.64 |
-04:01:05.0 |
HIP 30026 |
17.64 |
| 2026-05-20 12:00 |
06:19:35.62 |
-04:00:55.2 |
HIP 30026 |
17.69 |
| 2026-05-21 00:00 |
06:19:37.61 |
-04:00:45.6 |
HIP 30026 |
17.75 |
| 2026-05-21 12:00 |
06:19:39.62 |
-04:00:36.1 |
HIP 30026 |
17.84 |
| 2026-05-22 00:00 |
06:19:41.63 |
-04:00:26.7 |
HIP 30026 |
17.94 |
| 2026-05-22 12:00 |
06:19:43.66 |
-04:00:17.4 |
HIP 30026 |
18.06 |
| 2026-05-23 00:00 |
06:19:45.70 |
-04:00:08.3 |
HIP 30026 |
18.20 |
| 2026-05-23 12:00 |
06:19:47.75 |
-03:59:59.3 |
HIP 30026 |
18.36 |
| 2026-05-24 00:00 |
06:19:49.82 |
-03:59:50.5 |
HIP 30026 |
18.53 |
| 2026-05-24 12:00 |
06:19:51.89 |
-03:59:41.7 |
HIP 30026 |
18.73 |
| 2026-05-25 00:00 |
06:19:53.97 |
-03:59:33.1 |
HIP 30026 |
18.93 |
| 2026-05-25 12:00 |
06:19:56.07 |
-03:59:24.7 |
HIP 30026 |
19.16 |
| 2026-05-26 00:00 |
06:19:58.17 |
-03:59:16.4 |
HIP 30026 |
19.40 |
| 2026-05-26 12:00 |
06:20:00.29 |
-03:59:08.2 |
HIP 30026 |
19.66 |
| 2026-05-27 00:00 |
06:20:02.41 |
-03:59:00.1 |
HIP 30026 |
19.93 |
| 2026-05-27 12:00 |
06:20:04.55 |
-03:58:52.2 |
HIP 30026 |
20.21 |
| 2026-05-28 00:00 |
06:20:06.69 |
-03:58:44.5 |
HIP 30026 |
20.51 |
| 2026-05-28 12:00 |
06:20:08.85 |
-03:58:36.8 |
HIP 30026 |
20.82 |
| 2026-05-29 00:00 |
06:20:11.01 |
-03:58:29.3 |
HIP 30026 |
21.15 |
| 2026-05-29 12:00 |
06:20:13.18 |
-03:58:21.9 |
HIP 30026 |
21.49 |
| 2026-05-30 00:00 |
06:20:15.36 |
-03:58:14.7 |
HIP 30026 |
21.84 |
| 2026-05-30 12:00 |
06:20:17.56 |
-03:58:07.6 |
HIP 30026 |
22.20 |
| 2026-05-31 00:00 |
06:20:19.76 |
-03:58:00.7 |
HIP 30026 |
22.58 |
| 2026-05-31 12:00 |
06:20:21.96 |
-03:57:53.9 |
HIP 30026 |
22.96 |
| 2026-06-01 00:00 |
06:20:24.18 |
-03:57:47.2 |
HIP 30026 |
23.36 |
| 2026-06-01 12:00 |
06:20:26.41 |
-03:57:40.7 |
HIP 30026 |
23.76 |
| 2026-06-02 00:00 |
06:20:28.64 |
-03:57:34.3 |
HIP 30026 |
24.17 |