View source for 523 Ada

{{Short description| Minor planet orbiting the sun}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
 | minorplanet= yes
 | background= #D6D6D6
 | name= 523 Ada
 | mpc_name= (523) Ada
 | alt_names= 1904 ND
 | discoverer= [[Raymond Smith Dugan]]
 | discovered= 27 January 1904
 | discovery_site= [[Heidelberg]]
 | epoch= 31 July 2016 ([[Julian day|JD]] 2457600.5)
 | eccentricity= 0.17432
 | semimajor= {{Convert|2.9693|AU|Gm|abbr=on}}
 | perihelion= {{Convert|2.4517|AU|Gm|abbr=on}}
 | aphelion= {{Convert|3.4869|AU|Gm|abbr=on|lk=on}}
 | period= 5.12 [[Julian year (astronomy)|yr]] (1868.9 [[Julian year (astronomy)|d]])
 | inclination= 4.2955°
 | asc_node= 260.837°
 | arg_peri= 189.461°
 | mean_anomaly= 31.6678[[Degree (angle)|°]]
 | dimensions= 
 | mean_radius= {{val|15.945|0.75}} [[Kilometre|km]]
 | albedo= {{val|0.2512|0.026}}<ref name=jpldata/>
 | rotation= 10.03 ± 0.01 hr<ref name="Lecrone2005"/><br/>{{Convert|10.03|h|d|abbr=on|lk=on}}<ref name=jpldata/>
 | abs_magnitude= 9.9<ref name=jpldata/>
 | mean_motion= {{Deg2DMS|0.19263|sup=ms}} / day
 | orbit_ref= <ref name=jpldata />
 | observation_arc= 113.46 yr (41442 d)
 | uncertainty= 0
}}

'''523 Ada''' is a [[minor planet]] orbiting the [[Sun]]. It was discovered January 29, 1904, by American astronomer [[Raymond Smith Dugan|Raymond S. Dugan]] at Heidelberg, Germany and was named after his friend Ada Helme. CCD images collected during the fall of 2004 at Oakley Observatory in [[Terre Haute, Indiana]], were used to generate a [[lightcurve]] for the object, showing a rotation period of 10.03 ± 0.01 hours.<ref name="Lecrone2005"/>

==References==
{{reflist|refs=

<ref name="Lecrone2005">{{citation
 | last1   = Lecrone
 | first1  = Crystal
 | last2   = Mills
 | first2  = George
 | last3   = Ditteon
 | first3  = Richard
 | title   = Lightcurves and periods for asteroids 463 Lola, 523 Ada, 544 Jetta, 642 Clara, 883 Matterania, 6475 Refugium
 | journal = The Minor Planet Bulletin
 | volume  = 32
 | issue   = 3
 | pages   = 62–64
 |date=September 2005
 | bibcode = 2005MPBu...32...62L
 | postscript = .
}}</ref>

<ref name=jpldata>{{cite web
  |title=JPL Small-Body Database Browser: 523 Ada (1904 ND)
  |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=523
  |publisher=[[Jet Propulsion Laboratory]]
  |access-date=8 May 2016}}</ref>

}} <!-- end of reflist -->

==External links==
* {{AstDys|523}}
* {{JPL small body}}

{{Minor planets navigator |522 Helga |number=523 |524 Fidelio}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:000523}}
[[Category:Background asteroids]]
[[Category:Discoveries by Raymond Dugan|Ada]]
[[Category:Named minor planets|Ada]]
[[Category:X-type asteroids (SMASS)]]
[[Category:Astronomical objects discovered in 1904|19040127]]


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