|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:age
|
around 1 billion years
approximately 1 billion years
|
|
gptkbp:apparent_magnitude
|
5.12
|
|
gptkbp:average_temperature
|
approximately 8000 K
approximately 7500 K
|
|
gptkbp:categories
|
Greek letter designation
|
|
gptkbp:common_name
|
gptkb:Upsilon_Lyrae
|
|
gptkbp:components
|
gptkb:Upsilon_Lyrae_A
gptkb:Upsilon_Lyrae_B
|
|
gptkbp:contains_star
|
gptkb:Upsilon_Lyrae_B
|
|
gptkbp:declination
|
+34° 24′ 36″
+34° 24' 36"
|
|
gptkbp:discovery
|
gptkb:William_Herschel
|
|
gptkbp:discovery_year
|
1830
ancient times
|
|
gptkbp:distance_from_earth
|
approximately 50 light years
|
|
gptkbp:eccentricity
|
0.4
|
|
gptkbp:exhibition
|
HD 173416
HIP 92056
HR 7075
HR 7072
|
|
gptkbp:has_bayer_designation
|
gptkb:Upsilon_Lyrae
|
|
gptkbp:has_color
|
0.25
|
|
gptkbp:has_companion
|
gptkb:Upsilon_Lyrae_B
|
|
gptkbp:has_luminosity
|
approximately 20 times that of the Sun
approximately 20 solar luminosities
|
|
gptkbp:has_mechanic
|
-0.12 arcseconds/year
-0.045 arcseconds/year
+0.15 arcseconds/year
+0.020 arcseconds/year
|
|
gptkbp:has_spectral_type
|
gptkb:A5_V
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Upsilon Lyrae
|
|
gptkbp:is_visible_from
|
visible to the naked eye
|
|
gptkbp:located_in
|
gptkb:Lyra_constellation
|
|
gptkbp:mass
|
approximately 2.5 solar masses
|
|
gptkbp:metallicity
|
solar metallicity
|
|
gptkbp:name
|
gptkb:Upsilon_Lyrae
|
|
gptkbp:orbital_period
|
approximately 1000 days
|
|
gptkbp:right_ascension
|
18h 24m 24.0s
18h 44m 24s
|
|
gptkbp:semi_major_axis
|
approximately 2.5 AU
|
|
gptkbp:speed
|
-10.0 km/s
|
|
gptkbp:system
|
1 billion years
|
|
gptkbp:system_distance
|
50 light years
|
|
gptkbp:system_luminosity
|
20 solar luminosities
|
|
gptkbp:system_mass
|
3 solar masses
|
|
gptkbp:system_temperature
|
7500 K
|
|
gptkbp:type
|
gptkb:star
|