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Asteroid 4426 Roerich

Alternate IDs:
1936 LD, 1987 SP, 1978 RW4, 1969 TB6, 1979 YM7, 1986 LP1, 1974 VB1, 1978 TK3, 1972 GF, 1981 GV
Asteroid 4426 Roerich (top)

2MASS Asteroid and Comet Survey V2.0 (1 data product)

J MAGNITUDE 2MASS * J band selected magnitude in the 2MASS survey, or if the source is not detected in the J-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the first character of the rd_flg value.
(MAGNITUDE)
J MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the J-band magnitude in the 2MASS survey. If rd_flg[1]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[1]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If J_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[1]=0 or 6) or if the source is not measurable (rd_flg[1]=9).
(MAGNITUDE)
H MAGNITUDE 2MASS * H band selected magnitude in the 2MASS survey, or if the source is not detected in the H-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the second character of the rd_flg value.
(MAGNITUDE)
H MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the H-band magnitude in the 2MASS survey. If rd_flg[2]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[2]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If H_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[2]=0 or 6) or if the source is not measurable (rd_flg[2]=9).
(MAGNITUDE)
KS MAGNITUDE 2MASS * Ks band selected magnitude in the 2MASS survey, or if the source is not detected in the Ks-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the third character of the rd_flg value.
(MAGNITUDE)
KS MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the Ks-band magnitude in the 2MASS survey. If rd_flg[3]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[3]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If KS_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[3]=0 or 6) or if the source is not measurable (rd_flg[3]=9).
(MAGNITUDE)
15.508 0.058 15.076 0.072 15.132 0.134

Asteroid 4426 Roerich (top)

Asteroid Names and Discovery V12.0 (1 data product)

Asteroid 4426 Roerich (top)

Asteroid Taxonomy V6.0 (1 data product)

Asteroid 4426 Roerich (top)

IRTF Near-IR Spectroscopy of Asteroids V2.0 (1 data product)

thumbnail for sunshineetal2008/4426_040507t084949.tab

NEAR-IR SPECTRUM OF ASTEROID 4426 ROERICH

time: 2004-05-07T08:49:49      file: sunshineetal2008/4426_040507t084949.tab      dataset: IRTF Near-IR Spectroscopy of Asteroids V2.0

Asteroid spectrum obtained with SpeX at the NASA Infrared Telescope Facility (IRTF). Preprocessing of the SpeX data, as well as extraction of the 1-D spectrum and wavelength calibration was carried out using various tasks in IRAF. Telluric correction was achieved with IDL code that utilizes model atmospheric transmission spectra generated with ATRAN. Multiple solar-analog stars were used in calibrating this spectrum in units of relative reflectance. Spectrum has been normalized to 1.0 at ~ 1.215 microns (center of the J-band).
Asteroid 4426 Roerich (top)

SDSS Moving Object Catalog V3.0 (1 data product)

SDSS U MAGNITUDE * SDSS u' psf magnitude. The SDSS u' filter has effective wavelength 3540 angstroms and FWHM 570 angstroms. The psf (point spread function) magnitude is calculated from the total flux determined by a point spread fuction fitting procedure.
(MAGNITUDE)
SDSS U ERROR * SDSS u' magnitude error.
(MAGNITUDE)
SDSS G MAGNITUDE * SDSS g' psf magnitude. The SDSS g' filter has effective wavelength 4770 angstroms and FWHM 1370 angstroms. The psf (point spread function) magnitude is calculated from the total flux determined by a point spread fuction fitting procedure.
(MAGNITUDE)
SDSS G ERROR * SDSS g' magnitude error.
(MAGNITUDE)
SDSS R MAGNITUDE * SDSS r' psf magnitude. The SDSS r' filter has effective wavelength 6230 angstroms and FWHM 1370 angstroms. The psf (point spread function) magnitude is calculated from the total flux determined by a point spread fuction fitting procedure.
(MAGNITUDE)
SDSS R ERROR * SDSS r' magnitude error.
(MAGNITUDE)
SDSS I MAGNITUDE * SDSS i' psf magnitude. The SDSS i' filter has effective wavelength 7630 angstroms and FWHM 1530 angstroms. The psf (point spread function) magnitude is calculated from the total flux determined by a point spread fuction fitting procedure.
(MAGNITUDE)
SDSS I ERROR * SDSS i' magnitude error.
(MAGNITUDE)
SDSS Z MAGNITUDE * SDSS z' psf magnitude. The SDSS z' filter has effective wavelength 9130 angstroms and FWHM 950 angstroms. The psf (point spread function) magnitude is calculated from the total flux determined by a point spread fuction fitting procedure.
(MAGNITUDE)
SDSS Z ERROR * SDSS z' magnitude error.
(MAGNITUDE)
SDSS A COLOR * SDSS a* color. See Ivezic et al. 2001 [IVEZICETAL2001] AJ 122, 2749-2784.
(MAGNITUDE)
SDSS A ERROR * SDSS a* color error
(MAGNITUDE)
SDSS V MAGNITUDE * Johnson V-band magnitude synthesized from SDSS colors using V = r + 0.44*(g-r) - 0.02
(MAGNITUDE)
SDSS B MAGNITUDE * Johnson B-band magnitude synthesized from SDSS colors using B = V + 1.04*(g-r) + 0.19
(MAGNITUDE)
18.71 0.02 24.99 0.61 16.31 0.01 16.07 0.01 16.00 0.04 0.55 20.11 29.33

Asteroid 4426 Roerich (top)

Small Main-belt Asteroid Spectroscopic Survey, Phase II (1 data product)

thumbnail for data18/4426_01.tab

4426 ROERICH CCD SPECTRUM

time: 1995-05-15T07:06:55      file: data18/4426_01.tab      dataset: Small Main-belt Asteroid Spectroscopic Survey, Phase II

Individual asteroid spectrum obtained during the Phase II Small Main-Belt Asteroid Spectroscopic Survey with the MDM telescopes at Kitt Peak National Observatory.

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