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523 Ada (1904 ND)
Classification: Main-belt Asteroid          SPK-ID: 2000523
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744000941323825 4.3876e-08  
a 2.969949617820244 1.6761e-08 AU
q 2.45199012490396 1.3155e-07 AU
i 4.295386529202075 5.1591e-06 deg
node 260.8499808696916 7.2019e-05 deg
peri 189.3102963630824 7.3161e-05 deg
M 276.2164526293935 1.3482e-05 deg
tp 2457435.589190267948
(2016-Feb-17.08919027)
7.0635e-05 JED
period 1869.485279772387
5.12
1.5826e-05
4.333e-08
d
yr
n .1925663731590498 1.6302e-09 deg/d
Q 3.487909110736528 1.9685e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      40956 days (112.13 yr)  
   first obs. used      1902-10-25  
   last obs. used      2014-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57186  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:45:55  

Additional Information
 Earth MOID = 1.46836 AU 
 T_jup = 3.236 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.8 mag n/a MPO250196  
diameter diameter 31.89 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
rotation period rot_per 10.03 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Georgilas, S.A.; Wetterer, C.J. (1996) Minor Planet Bul. 23, 41-42.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[LeCrone, C.; Mills, G.; Ditteon, R. (2005) Minor Planet Bul. 32, 62-64.]
geometric albedo albedo 0.2512   0.026 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

523 Ada (1904 ND)          Discovered 1904-Jan-27 by Dugan, R. S. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1904 ND = 1937 NB = 1964 XN = A902 UD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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