C/2006 P1 (McNaught)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2006 P1 (McNaught) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2007-01-12T19:10:20.087040Z |
| Orbit solution date (soln_date, UTC) | 2021-04-15T23:30:59Z |
| Obs used | 331 |
| NEO | - |
| M1 | 5.400 |
| K1 | 20.750 |
| PC | 0.030 |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2006-11-26.0000000 |
| e | 1.00001882 |
| q (au) | 0.170736 |
| a (au) | -9074.061069 |
| i (deg) | 77.837001 |
| Ω (om, deg) | 267.414803 |
| ω (w, deg) | 155.974968 |
| M (ma, deg) | -0.000055 |
밝기
산란 + 전체 선형
$$ M_a = (6.650 + 5.259\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 6.650 |
| n | 5.259 |
| gf | 0.800 |
| gb | -0.500 |
| k | 1.000 |
| δ90 | 1.000 |
| 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 |
|---|---|---|---|
| 2006-08-07 | 2006-11-17 | +12.6816 | -3.961 |
| 2006-11-17 | 2006-12-24 | -0.8962 | -1.464 |
| 2006-12-24 | 2007-01-09 | -2.5415 | -1.500 |
| 2007-01-09 | 2007-01-12 | -0.7084 | -0.027 |
| 2007-01-12 | 2007-07-11 | -2.7447 | -1.992 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-02-03 00:00 | 17:09:35.48 | -53:19:33.7 | HIP 83934 | 4.38 |
| 2026-02-03 12:00 | 17:09:38.31 | -53:19:53.5 | HIP 83934 | 4.30 |
| 2026-02-04 00:00 | 17:09:41.10 | -53:20:13.4 | HIP 83934 | 4.28 |
| 2026-02-04 12:00 | 17:09:43.87 | -53:20:33.5 | HIP 83934 | 4.33 |
| 2026-02-05 00:00 | 17:09:46.59 | -53:20:53.6 | HIP 83934 | 4.43 |
| 2026-02-05 12:00 | 17:09:49.29 | -53:21:13.7 | HIP 83934 | 4.58 |
| 2026-02-06 00:00 | 17:09:51.94 | -53:21:34.0 | HIP 83934 | 4.79 |
| 2026-02-06 12:00 | 17:09:54.57 | -53:21:54.3 | HIP 83934 | 5.03 |
| 2026-02-07 00:00 | 17:09:57.15 | -53:22:14.8 | HIP 83934 | 5.31 |
| 2026-02-07 12:00 | 17:09:59.70 | -53:22:35.3 | HIP 83934 | 5.61 |
| 2026-02-08 00:00 | 17:10:02.22 | -53:22:55.8 | HIP 83934 | 5.94 |
| 2026-02-08 12:00 | 17:10:04.70 | -53:23:16.5 | HIP 83934 | 6.29 |
| 2026-02-09 00:00 | 17:10:07.14 | -53:23:37.2 | HIP 83934 | 6.65 |
| 2026-02-09 12:00 | 17:10:09.55 | -53:23:58.0 | HIP 83934 | 7.02 |
| 2026-02-10 00:00 | 17:10:11.92 | -53:24:18.9 | HIP 83934 | 7.40 |
| 2026-02-10 12:00 | 17:10:14.25 | -53:24:39.8 | HIP 83934 | 7.79 |
| 2026-02-11 00:00 | 17:10:16.54 | -53:25:00.8 | HIP 83934 | 8.19 |
| 2026-02-11 12:00 | 17:10:18.80 | -53:25:21.8 | HIP 83934 | 8.59 |
| 2026-02-12 00:00 | 17:10:21.02 | -53:25:43.0 | HIP 83934 | 8.99 |
| 2026-02-12 12:00 | 17:10:23.20 | -53:26:04.2 | HIP 83934 | 9.40 |
| 2026-02-13 00:00 | 17:10:25.34 | -53:26:25.4 | HIP 83934 | 9.80 |
| 2026-02-13 12:00 | 17:10:27.45 | -53:26:46.7 | HIP 83934 | 10.21 |
| 2026-02-14 00:00 | 17:10:29.51 | -53:27:08.1 | HIP 83934 | 10.62 |
| 2026-02-14 12:00 | 17:10:31.54 | -53:27:29.5 | HIP 83934 | 11.03 |
| 2026-02-15 00:00 | 17:10:33.53 | -53:27:51.0 | HIP 83934 | 11.43 |
| 2026-02-15 12:00 | 17:10:35.48 | -53:28:12.5 | HIP 83934 | 11.84 |
| 2026-02-16 00:00 | 17:10:37.39 | -53:28:34.1 | HIP 83934 | 12.25 |
| 2026-02-16 12:00 | 17:10:39.26 | -53:28:55.8 | HIP 83934 | 12.65 |
| 2026-02-17 00:00 | 17:10:41.09 | -53:29:17.4 | HIP 83934 | 13.05 |
| 2026-02-17 12:00 | 17:10:42.88 | -53:29:39.2 | HIP 83934 | 13.45 |
| 2026-02-18 00:00 | 17:10:44.63 | -53:30:01.0 | HIP 83934 | 13.85 |
| 2026-02-18 12:00 | 17:10:46.34 | -53:30:22.8 | HIP 83934 | 14.25 |
| 2026-02-19 00:00 | 17:10:48.01 | -53:30:44.6 | HIP 83934 | 14.64 |
| 2026-02-19 12:00 | 17:10:49.64 | -53:31:06.5 | HIP 83934 | 15.04 |
| 2026-02-20 00:00 | 17:10:51.23 | -53:31:28.5 | HIP 84148 | 15.28 |
| 2026-02-20 12:00 | 17:10:52.78 | -53:31:50.5 | HIP 84148 | 15.31 |
| 2026-02-21 00:00 | 17:10:54.29 | -53:32:12.5 | HIP 84148 | 15.36 |
| 2026-02-21 12:00 | 17:10:55.76 | -53:32:34.5 | HIP 84148 | 15.43 |
| 2026-02-22 00:00 | 17:10:57.18 | -53:32:56.6 | HIP 84148 | 15.51 |
| 2026-02-22 12:00 | 17:10:58.57 | -53:33:18.7 | HIP 84148 | 15.61 |
| 2026-02-23 00:00 | 17:10:59.91 | -53:33:40.9 | HIP 84148 | 15.72 |
| 2026-02-23 12:00 | 17:11:01.22 | -53:34:03.0 | HIP 84148 | 15.85 |
| 2026-02-24 00:00 | 17:11:02.48 | -53:34:25.2 | HIP 84148 | 15.99 |