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) |
| 2026-09-20 00:00 |
06:27:12.92 |
-04:26:55.4 |
HIP 30691 |
3.69 |
| 2026-09-20 12:00 |
06:27:13.20 |
-04:27:13.0 |
HIP 30691 |
3.72 |
| 2026-09-21 00:00 |
06:27:13.45 |
-04:27:30.7 |
HIP 30691 |
3.76 |
| 2026-09-21 12:00 |
06:27:13.69 |
-04:27:48.4 |
HIP 30691 |
3.83 |
| 2026-09-22 00:00 |
06:27:13.90 |
-04:28:06.1 |
HIP 30691 |
3.91 |
| 2026-09-22 12:00 |
06:27:14.09 |
-04:28:23.8 |
HIP 30691 |
4.01 |
| 2026-09-23 00:00 |
06:27:14.26 |
-04:28:41.5 |
HIP 30691 |
4.12 |
| 2026-09-23 12:00 |
06:27:14.41 |
-04:28:59.2 |
HIP 30691 |
4.25 |
| 2026-09-24 00:00 |
06:27:14.54 |
-04:29:16.9 |
HIP 30691 |
4.39 |
| 2026-09-24 12:00 |
06:27:14.64 |
-04:29:34.7 |
HIP 30691 |
4.53 |
| 2026-09-25 00:00 |
06:27:14.72 |
-04:29:52.4 |
HIP 30691 |
4.69 |
| 2026-09-25 12:00 |
06:27:14.78 |
-04:30:10.1 |
HIP 30691 |
4.86 |
| 2026-09-26 00:00 |
06:27:14.82 |
-04:30:27.9 |
HIP 30691 |
5.03 |
| 2026-09-26 12:00 |
06:27:14.84 |
-04:30:45.6 |
HIP 30691 |
5.21 |
| 2026-09-27 00:00 |
06:27:14.83 |
-04:31:03.4 |
HIP 30691 |
5.40 |
| 2026-09-27 12:00 |
06:27:14.80 |
-04:31:21.1 |
HIP 30691 |
5.59 |
| 2026-09-28 00:00 |
06:27:14.75 |
-04:31:38.8 |
HIP 30691 |
5.78 |
| 2026-09-28 12:00 |
06:27:14.68 |
-04:31:56.6 |
HIP 30691 |
5.98 |
| 2026-09-29 00:00 |
06:27:14.58 |
-04:32:14.3 |
HIP 30691 |
6.19 |
| 2026-09-29 12:00 |
06:27:14.47 |
-04:32:32.0 |
HIP 30691 |
6.39 |
| 2026-09-30 00:00 |
06:27:14.33 |
-04:32:49.7 |
HIP 30691 |
6.61 |
| 2026-09-30 12:00 |
06:27:14.17 |
-04:33:07.4 |
HIP 30691 |
6.82 |
| 2026-10-01 00:00 |
06:27:13.98 |
-04:33:25.1 |
HIP 30691 |
7.04 |
| 2026-10-01 12:00 |
06:27:13.78 |
-04:33:42.8 |
HIP 30691 |
7.26 |
| 2026-10-02 00:00 |
06:27:13.55 |
-04:34:00.5 |
HIP 30691 |
7.48 |
| 2026-10-02 12:00 |
06:27:13.30 |
-04:34:18.1 |
HIP 30691 |
7.71 |
| 2026-10-03 00:00 |
06:27:13.03 |
-04:34:35.8 |
HIP 30691 |
7.93 |
| 2026-10-03 12:00 |
06:27:12.73 |
-04:34:53.4 |
HIP 30691 |
8.16 |
| 2026-10-04 00:00 |
06:27:12.41 |
-04:35:11.0 |
HIP 30691 |
8.39 |
| 2026-10-04 12:00 |
06:27:12.07 |
-04:35:28.6 |
HIP 30691 |
8.63 |
| 2026-10-05 00:00 |
06:27:11.71 |
-04:35:46.1 |
HIP 30691 |
8.86 |
| 2026-10-05 12:00 |
06:27:11.33 |
-04:36:03.7 |
HIP 30691 |
9.10 |
| 2026-10-06 00:00 |
06:27:10.92 |
-04:36:21.2 |
HIP 30660 |
9.10 |
| 2026-10-06 12:00 |
06:27:10.49 |
-04:36:38.7 |
HIP 30660 |
9.02 |
| 2026-10-07 00:00 |
06:27:10.04 |
-04:36:56.1 |
HIP 30660 |
8.94 |
| 2026-10-07 12:00 |
06:27:09.56 |
-04:37:13.6 |
HIP 30660 |
8.86 |
| 2026-10-08 00:00 |
06:27:09.07 |
-04:37:31.0 |
HIP 30660 |
8.79 |
| 2026-10-08 12:00 |
06:27:08.55 |
-04:37:48.4 |
HIP 30660 |
8.72 |
| 2026-10-09 00:00 |
06:27:08.01 |
-04:38:05.7 |
HIP 30660 |
8.66 |
| 2026-10-09 12:00 |
06:27:07.44 |
-04:38:23.0 |
HIP 30660 |
8.61 |
| 2026-10-10 00:00 |
06:27:06.85 |
-04:38:40.3 |
HIP 30660 |
8.56 |
| 2026-10-10 12:00 |
06:27:06.24 |
-04:38:57.5 |
HIP 30660 |
8.51 |
| 2026-10-11 00:00 |
06:27:05.61 |
-04:39:14.7 |
HIP 30660 |
8.48 |