18545+3654 ES 2028 AB (Del2 Lyr)

18h 54m 30.29s +36° 53' 55.0" P.A. 349.00 sep 86.3 mag 4.30,11.20 Sp M4II dist. 225.73 pc (736.33 l.y.)

Coord 2000 18545+3654 Discov num ES 2028 Comp AB Coord arcsec 2000 18 54 30.29 +36 53 55.0
Date first 1923 Date last 2014 Obs 13
Pa first 350 Pa last 349.1 P.A. Now (θ) 349.1°
Sep first 87.0 Sep last 86.33 Sep. Now (ρ) 86.33"
Mag pri 4.30 Mag sec 11.20 delta mag (ΔM) 6.9 Spectral class M4II (red)
Pri motion ra -007 Sec motion ra +000
Pri motion dec +004 Sec motion dec +003
Notes N (See Notes)




rPM=0.877

This double is not physical.



18545+3654 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Del2 Lyr 67559 18 54 30 +36 53 55 ES 2028 AB 2014 13 349 86.3 4.30 11.20 6.90 <===
Show 67559 18 54 30 +36 53 55 SMR 13 AD 2014 14 210 193.1 4.46 8.77 4.31
Show 67559 18 54 30 +36 53 55 SMR 13 AE 2014 10 238 400.6 4.46 10.30 5.84
Show 67559 18 54 30 +36 53 55 SMR 13 AF 2014 14 245 369.4 4.46 8.80 4.34
Show 67559 18 54 30 +36 53 55 SMR 13 AG 2014 12 261 335.9 4.46 9.79 5.33
Show 67559 18 54 30 +36 53 55 SMR 13 AH 2014 14 284 229.4 4.46 8.67 4.21
Show 67559 18 54 30 +36 53 55 SMR 13 AJ 2014 9 249 279.5 4.30 12.00 7.70
Show 67559 18 54 30 +36 53 55 SMR 13 AK 2014 9 236 304.2 4.30 12.00 7.70
Show 18 54 29 +36 55 20 ES 2028 BC 2008 7 135 2.1 11.20 11.60 0.40
Show 18 54 12 +36 54 52 SMR 13 HI 2015 13 251 26.1 8.67 12.90 4.23


11-fold system
11 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name Del2 Lyr Constellation Lyra SAO 67559 HIP 92791
Tycho2 2651-02548-1 Gaia DR2 2093931938470745728 HD 175588 HR 7139
GC 25959 ADS 11825 BD BD+36 3319 Bayer Delta 2 Lyrae
Bayer name Del2 Lyr Flamsteed 12 Lyrae Flamsteed name 12 Lyr Distance 225.73
Distance ly 736.33 Bayer greek δ2 Lyr