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phase: 3

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J/A+AS/136/455

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Distance ρ
Position angle θ
Distance (x,y)
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IAU/CDS nomenclature

Mirrors

	J/A+AS/136/455	557		BVRI photometry of 3 BL Lac objects (Bai+, 1999) ReadMe+ftp 1999A&AS..136..455B Similar Catalogs Objects Post annotation
1.	J/A+AS/136/455/table1		Photometric data of three BL Lac objects (1205 rows) metaJ/A+AS/136/455/table1

Simple Constraint List Of Constraints

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Constraint

Explain (UCD)

recno

Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD)

Date

"Y:M:D"

⁽ⁿ⁾Observation date (time.epoch) (TIME_DATE)

Julian Date (time.epoch) (TIME_DATE)

mag

Magnitude (phot.mag) (PHOT_MAG_UNDEF)

e_mag

mag

rms uncertainty on mag (stat.error) (ERROR)

Band

(char)

[BVRI] Filter used for the magnitude (meta.code;instr.filter) (INST_FILTER_CODE)

Object

(char)

Name of the object observed (meta.id;meta.main) (ID_MAIN)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

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https://cdsannotations.u-strasbg.fr/annotations/vizierTable//

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Contact - Legals

If the access to catalogues with VizieR was helpful for your research work,the following acknowledgment would be appreciated: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier). The original description of the VizieR service was published in A&AS 143, 23