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Asteroid 2540 Blok

Alternate IDs:
1968 UZ, 1980 LN, 1957 JQ, 1960 FK, 1971 TH2, 1950 ED, 1981 UQ

Data sets with data for Asteroid 2540 Blok:

Asteroid 2540 Blok (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)
14.235 0.033 13.783 0.030 13.695 0.034
14.523 0.029 14.101 0.040 14.039 0.050
15.290 0.038 14.723 0.046 14.847 0.119

Asteroid 2540 Blok (top)

Asteroid Absolute Magnitudes V12.0 (1 data product)

ABSOLUTE VISUAL MAGNITUDE * IAU-adopted absolute V magnitude (H)
(MAGNITUDE) 		SLOPE PARAMETER * IAU-adopted slope parameter (G) SLOPE PARAMETER ORIGIN FLAG * Those slope parameters that were determined by fitting the IAU-adopted phase function to data are given an origin code letter of 'f' (for 'fitted'); all others are given a code letter of 'a' (for 'assumed'). MPC REFERENCE * Minor Planet Circular (MPC) or Minor Planet Orbit Supplement (MPO) reference
13.1 0.15 a MPC 17265

Asteroid 2540 Blok (top)

Asteroid Dynamical Families V4.1 (1 data product)

ZAPPALA FAMILY NAME * Familiy name in the family analysis of Zappala et al. (1995) ZAPPALA CLUMP FLAG * Indicates whether the Zappala family designation is a clump or a family, as defined in Zappala et al. (1995). F = family, C = clump. ZAPPALA FAMILY CONFIDENCE LEVEL * Confidence level of Zappala family membership, defined as quality code (QC) in Zappala et al. 1995.

Asteroid 2540 Blok (top)

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

DISCOVERY DATE * Date of discovery of an object DISCOVERY LOCATION * Location where the discovery observation of an object was made DISCOVERER NAMES * The name(s) of the discoverer(s) of an object
1971-10-13 Nauchnyj Chernykh, L.

Asteroid 2540 Blok (top)

NEOWISE Diameters and Albedos V1.0 (1 data product)

NEOWISE DIAMETER * NEOWISE best-fit effective spherical diameter, or assumed value if not fitted.
(KILOMETER) 		NEOWISE DIAMETER UNCERTAINTY * NEOWISE unceratinty in the best-fit effective spherical diameter, or assumed value if not fitted.
(KILOMETER) 		NEOWISE V ALBEDO * NEOWISE best-fit visible geometric albedo, or assumed value if not fitted. NEOWISE V ALBEDO UNCERTAINTY * NEOWISE uncertainty of the best-fit visible geometric albedo, or assumed value if not fitted. NEOWISE THERMAL BEAMING PARAMETER * NEOWISE best-fit NEATM thermal beaming parameter, or assumed value if not fitted. NEOWISE THERMAL BEAMING PARAMETER UNCERTAINTY * NEOWISE uncertainty of the best-fit NEATM thermal beaming parameter, or assumed value if not fitted. NEOWISE REFERENCE CODE * NEOWISE reference code to the original publication of fitted parameters. See the refrence.tab in the dataset for the full reference
5.671 0.122 0.389 0.118 0.815 0.055 Mas14
6.362 0.273 0.302 0.033 1.000 0.000 Mas12

Asteroid 2540 Blok (top)

NEOWISE Diameters and Albedos V2.0 (1 data product)

ABSOLUTE VISUAL MAGNITUDE * IAU-adopted absolute V magnitude (H)
(magnitudes) 		SLOPE PARAMETER * IAU-adopted slope parameter (G) OBSERVATION DATE * Date of observation
(day) 		NEOWISE DIAMETER * NEOWISE best-fit effective spherical diameter, or assumed value if not fitted.
(kilometer) 		NEOWISE DIAMETER UNCERTAINTY * NEOWISE unceratinty in the best-fit effective spherical diameter, or assumed value if not fitted.
(kilometer) 		NEOWISE V ALBEDO * NEOWISE best-fit visible geometric albedo, or assumed value if not fitted. NEOWISE V ALBEDO UNCERTAINTY * NEOWISE uncertainty of the best-fit visible geometric albedo, or assumed value if not fitted. NEOWISE THERMAL BEAMING PARAMETER * NEOWISE best-fit NEATM thermal beaming parameter, or assumed value if not fitted. NEOWISE THERMAL BEAMING PARAMETER UNCERTAINTY * NEOWISE uncertainty of the best-fit NEATM thermal beaming parameter, or assumed value if not fitted. NEOWISE REFERENCE CODE * NEOWISE reference code to the original publication of fitted parameters. See the refrence.tab in the dataset for the full reference
12.90 +0.15 2455362.8670075 5.671 0.122 0.389 0.118 0.815 0.055 Mas14
12.90 +0.15 2455540.1554715 6.362 0.273 0.302 0.033 1.000 0.200 Mas12
13.00 +0.15 2457128.8736024 5.478 0.893 0.349 0.167 0.950 0.200 Nug16

Asteroid 2540 Blok (top)

Near-Infrared Photometry of Asteroids From DENIS V1.0 (1 data product)

OBSERVATION DATE * Date of observation
(DAY) 		DENIS I MAGNITUDE * I magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE) 		DENIS I MAGNITUDE ERROR * Error in the I magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE) 		DENIS J MAGNITUDE * J magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE) 		DENIS J MAGNITUDE ERROR * Error in the J magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE) 		DENIS KS MAGNITUDE * Ks magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE) 		DENIS KS MAGNITUDE ERROR * Error in the Ks magnitude in the DENIS (Deep European Near-Infrared southern sky) survey.
(MAGNITUDE)
2451781.633171 16.68 0.42 15.82 0.41 99.99 9.99
2450185.733356 15.30 0.03 14.86 0.11 13.97 0.44
2451803.588819 15.83 0.06 15.90 0.26 99.99 9.99


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