Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
523 Ada (A904 BA)
Classification: Main-belt Asteroid          SPK-ID: 2000523
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787008871617129 1.8401e-08  
a 2.966027826594107 9.2276e-09 au
q 2.435996022635413 5.6674e-08 au
i 4.312940496175035 8.0522e-07 deg
node 260.6219944497393 5.8101e-06 deg
peri 189.9486038485088 8.0434e-06 deg
M 339.6077629107809 3.338e-06 deg
tp 2459306.187501142919
(2021-Apr-01.68750114)
1.7388e-05 TDB
period 1865.783545227896
5.11
8.707e-06
2.384e-08
d
yr
n .1929484269066312 9.0043e-10 deg/d
Q 3.496059630552801 1.0877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3238  
   data-arc span      43239 days (118.38 yr)  
   first obs. used      1902-10-25  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43959  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:00:50  

Additional Information
 Earth MOID = 1.45242 au 
 Jupiter MOID = 1.71707 au 
 T_jup = 3.236 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.92   n/a E2021B10  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Georgilas, S.A.; Wetterer, C.J. (1996) Minor Planet Bull. 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 Bull. 32, 62-64.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
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 (A904 BA)          Discovered 1904-Jan-27 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A904 BA = 1937 NB = 1964 XN = A902 UD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 00:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin