152664 (1998 FW4)

1998FW4

Data

Number 152664
Provisional Designation 1998 FW4
Type Apollo, NEO, PHA
Absolute Magnitude, H 19.7
Rotation period 17.38 h
Eccentricity 0.71572
Semi-major axis 2.5267 au
Inclination 3.416 °
Discovery Date 1998-03-20
Discovery Means LINEAR at Socorro

Radar Experiments

Doppler-Only (Continuous Wave) Echo Power Spectra

Delay-Doppler Images

2013-09-27

2013-09-27, 1998FW4.p05.2013sep27.png

2013-09-24

2013-09-24, 1998FW4.p05.2013sep24.png

2013-09-22

2013-09-22, 1998FW4.p05.2016sep22.png

Animations

2013-09-22

2013-09-22, 1998FW4.p05.2016sep22.gif

2013-09-28, 1998FW4.2013Sep28.sp0364Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-28 smoothed to a frequency resolution of 0.036 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 0.01.

Observation Date: 2013-09-28 (13:41:50-13:59:47)

Resolution: 0.036 Hz

Polarization Ratio: 0.01

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.
2013-09-26, 1998FW4.2013Sep26.p0244Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-26 smoothed to a frequency resolution of 0.024 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 0.21.

Observation Date: 2013-09-26 (10:47:12-10:54:25)

Resolution: 0.024 Hz

Polarization Ratio: 0.21

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.
2013-09-25, 1998FW4.2013Sep25.p0263Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-25 smoothed to a frequency resolution of 0.026 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 0.22.

Observation Date: 2013-09-25 (09:46:42-09:55:58)

Resolution: 0.026 Hz

Polarization Ratio: 0.22

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.
2013-09-24, 1998FW4.2013Sep24.p0263Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-24 smoothed to a frequency resolution of 0.026 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 0.26.

Observation Date: 2013-09-24 (09:02:55-09:09:41)

Resolution: 0.026 Hz

Polarization Ratio: 0.26

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.
2013-09-23, 1998FW4.2013Sep23.p025Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-23 smoothed to a frequency resolution of 0.025 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 0.27.

Observation Date: 2013-09-23 (07:49:12-07:56:16)

Resolution: 0.025 Hz

Polarization Ratio: 0.27

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.
2013-09-22, 1998FW4.2013Sep22.p0217Hz.cw.png

Description

Echo power spectrum obtained on 2013-9-22 smoothed to a frequency resolution of 0.022 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 0.41.

Observation Date: 2013-09-22 (06:25:31-06:37:54)

Resolution: 0.022 Hz

Polarization Ratio: 0.41

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.
2009-10-04, 1998FW4.04oct.cw.png

Description

Observation Date: 2009-10-04 (16:12:37-17:26:52)

Resolution: 0.06 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.
2009-10-03, 1998FW4.03oct.cw.png

Description

Observation Date: 2009-10-03 (16:29:32-16:36:31)

Resolution: 0.05 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.
2009-10-02, 1998FW4.02oct.cw.png

Description

Observation Date: 2009-10-02 (17:28:33-18:38:52)

Resolution: 0.06 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.
2009-10-01, 1998FW4.01oct.cw.png

Description

Observation Date: 2009-10-01 (18:01:32-18:09:02)

Resolution: 0.08 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.
2009-09-30, 1998FW4.30sep.cw.png

Description

Observation Date: 2009-09-30 (19:24:03-19:27:44)

Resolution: 0.06 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.
2013-09-27, 1998FW4.p05.2013sep27.png

Description

Delay-Doppler radar image obtained on 2013-9-27. The spatial resolution is 7.5 m per pixel vertically along the delay axis and 0.05 Hz per pixel horizontally along the Doppler axis.

Observation Date: 2013-09-27 (12:13:22-13:05:35)

Resolution, Delay Axis: 7.5 m/px

Resolution, Doppler Axis: 0.05 Hz/px

Download Options:

2013-09-24, 1998FW4.p05.2013sep24.png

Description

Delay-Doppler radar image obtained on 2013-9-24. The spatial resolution is 7.5 m per pixel vertically along the delay axis and 0.05 Hz per pixel horizontally along the Doppler axis.

Observation Date: 2013-09-24 (09:18:40-10:32:10)

Resolution, Delay Axis: 7.5 m/px

Resolution, Doppler Axis: 0.05 Hz/px

Download Options:

2013-09-22, 1998FW4.p05.2016sep22.png

Description

Delay-Doppler radar image obtained on 2013-9-22. The spatial resolution is 7.5 m per pixel vertically along the delay axis and 0.05 Hz per pixel horizontally along the Doppler axis.

Observation Date: 2013-09-22 (06:40:43-08:35:06)

Resolution, Delay Axis: 7.5 m/px

Resolution, Doppler Axis: 0.05 Hz/px

Download Options:

2013-09-22, 1998FW4.p05.2016sep22.gif

Description

Sequence of delay-Doppler radar images obtained on 2013-9-22 from 06:00 to 08:00 AST. The resolution is 7.5 m per pixel vertically along the delay axis and 0.05 Hz per pixel horizontally along the Doppler axis.

Observation Date: 2013-09-22 (06:40:43-08:35:06)

Download Options:

Additional Information


  • NASA Jet Propulsion Laboratory Small-Body Database entry

 

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