144411 (2004 EW9)
Data
| Number | 144411 |
|---|---|
| Provisional Designation | 2004 EW9 |
| Type | Apollo, NEO |
| Absolute Magnitude, H | 16.6 |
| Rotation period | 49.94 h |
| Eccentricity | 0.5338 |
| Semi-major axis | 1.918 au |
| Inclination | 8.788 ° |
| Discovery Date | 2004-03-15 |
| Discovery By | NEAT at Palomar |
Radar Experiments
Doppler-Only (Continuous Wave) Echo Power Spectra
Delay-Doppler Images
Description
Echo power spectrum obtained on 2020-7-3 smoothed to a frequency resolution of 0.1 Hz. Power in the opposite circular (OC) polarization as transmitted is the solid line while the power in the same circular (SC) polarization as transmitted is the dashed line. The polariation ratio on this date was 0.52.
Observation Date: 2020-07-03 (11:56:42-12:25:30)
Resolution: 0.1 Hz
Polarization Ratio: 0.52
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Echo power spectrum obtained on 2020-6-21 smoothed to a frequency resolution of 0.1 Hz. Power in the opposite circular (OC) polarization as transmitted is the solid line while the power in the same circular (SC) polarization as transmitted is the dashed line. The polariation ratio on this date was 0.25.
Observation Date: 2020-06-21 (13:42:05-14:21:41)
Resolution: 0.1 Hz
Polarization Ratio: 0.25
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Observation Date: 2012-07-19 (15:19:27-15:21:21)
Resolution: 0.03 Hz
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Echo power spectrum obtained on 2012-7-15 smoothed to a frequency resolution of 0.03 Hz. Power in the opposite circular (OC) polarization as transmitted is the solid line while the power in the same circular (SC) polarization as transmitted is the dashed line. The polariation ratio on this date was 0.05.
Observation Date: 2012-07-15 (17:48:56-18:35:11)
Resolution: 0.03 Hz
Polarization Ratio: 0.05
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Echo power spectrum obtained on 2012-7-12 smoothed to a frequency resolution of 0.05 Hz. Power in the opposite circular (OC) polarization as transmitted is the solid line while the power in the same circular (SC) polarization as transmitted is the dashed line. The polariation ratio on this date was 0.14.
Observation Date: 2012-07-12 (15:57:11-15:59:04)
Resolution: 0.05 Hz
Polarization Ratio: 0.14
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Echo power spectrum obtained on 2012-7-11 smoothed to a frequency resolution of 0.05 Hz. Power in the opposite circular (OC) polarization as transmitted is the solid line while the power in the same circular (SC) polarization as transmitted is the dashed line. The polariation ratio on this date was 0.17.
Observation Date: 2012-07-11 (18:13:48-18:19:52)
Resolution: 0.05 Hz
Polarization Ratio: 0.17
Download Options:
CSV file is the raw data corresponding to the viewed cw spectra. The CSV file consists of three columns. The first column is the doppler frequency (Hz), the second column is the echo power in the same sense (SC) and the third column is the echo power in the opposite sense (OC). Echo power is in units of standard deviation above the noise baseline.
Description
Delay-Doppler radar image obtained on 2020-6-28. The spatial resolution is 30 m per pixel vertically along the delay axis and 0.2 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2020-06-28 (12:55:30-14:56:56)
Resolution, Delay Axis: 30 m/px
Resolution, Doppler Axis: 0.2 Hz/px
Download Options:
Description
Delay-Doppler radar image obtained on 2020-6-27. The spatial resolution is 30 m per pixel vertically along the delay axis and 0.2 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2020-06-27 (13:48:12-14:57:58)
Resolution, Delay Axis: 30 m/px
Resolution, Doppler Axis: 0.2 Hz/px
Download Options:
Description
Delay-Doppler radar image obtained on 2020-6-24. The spatial resolution is 30 m per pixel vertically along the delay axis and 0.2 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2020-06-24 (14:18:40-15:10:45)
Resolution, Delay Axis: 30 m/px
Resolution, Doppler Axis: 0.2 Hz/px
Download Options:
Description
Delay-Doppler radar image obtained on 2020-6-24. The spatial resolution is 75 m per pixel vertically along the delay axis and 0.5 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2020-06-24 (13:39:20-14:08:53)
Resolution, Delay Axis: 75 m/px
Resolution, Doppler Axis: 0.5 Hz/px
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Description
Delay-Doppler radar image obtained on 2020-6-23. The spatial resolution is 75 m per pixel vertically along the delay axis and 0.5 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2020-06-23 (14:09:13-15:17:59)
Resolution, Delay Axis: 75 m/px
Resolution, Doppler Axis: 0.5 Hz/px
Download Options:
Description
Delay-Doppler radar image obtained on 2012-7-16. The spatial resolution is 30 m per pixel vertically along the delay axis and 0.2 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2012-07-16 (16:20:37-18:15:18)
Resolution, Delay Axis: 30 m/px
Resolution, Doppler Axis: 0.2 Hz/px
Download Options:
Description
Delay-Doppler radar image obtained on 2012-7-15. The spatial resolution is 15 m per pixel vertically along the delay axis and 0.1 Hz per pixel horizontally along the Doppler axis.
Observation Date: 2012-07-15 (16:30:39-17:46:08)
Resolution, Delay Axis: 15 m/px
Resolution, Doppler Axis: 0.1 Hz/px
Download Options:
