C.D.S. - SIMBAD4 rel 1.8 - 2024.04.25CEST18:41:03 2XMM J202131.0+402645 --------------------- Object USNO-B1.0 1304-00388702 --- X --- OID=@3791015 (@@-1,255) --- coobox=21 Coordinates(ICRS,ep=J2000,eq=2000): 20 21 30.655 +40 26 46.39 (~) D [~ ~ ] 2006ApJ...652..387W Coordinates(FK4,ep=B1950,eq=1950): 20 19 43.307 +40 17 09.40 Coordinates(Gal,ep=J2000,eq=2000): 078.226631 +02.087376 hierarchy counts: #parents=0, #children=0, #siblings=0 Proper motions: ~ ~ [~ ~ ] ~ ~ Parallax: ~ [~] ~ ~ Radial Velocity: ~ [~ ~ ] ~ ~ Redshift: ~ [~ ~ ] ~ ~ cz: ~ [~ ~ ] ~ ~ Flux Spectral type: ~ ~ ~ Morphological type: ~ ~ ~ Angular size: ~ ~ ~ (~) ~ ~ Identifiers (3): USNO-B1.0 1304-00388702 [WSC2006] S21 2XMM J202131.0+402645 Bibcodes 1850-2024 () (14): 2023MNRAS.523..568S 2019ApJ...878...54P 2018ApJ...856...98W 2017ApJ...842...53Z 2015ApJ...799...76H 2013ApJ...770L...9L 2013MNRAS.436..968L 2011A&A...525A..33C 2011ApJ...743...74W 2011ApJS..194...17R 2010ApJ...725L...1L 2010MNRAS.405.1339T 2009Sci...325..840A 2006ApJ...652..387W Measures ( ): Notes (1) : (S) 24-Nov-2010 - pv ref:2010MNRAS.405.1339T obj:[WSC2006] S21 Possible X-ray counterpart of \object{PSR J2021+4026} (In TREPL et Al., 2010MNRAS.405.1339T) ================================================================================