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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785290348047874 3.4647e-08  
a 2.965350277908206 1.013e-08 au
q 2.435949154935146 1.0539e-07 au
i 4.313128626711132 3.7548e-06 deg
node 260.6193153435574 5.4444e-05 deg
peri 189.9836690974314 5.5579e-05 deg
M 300.972019714591 1.0885e-05 deg
tp 2459306.321385427114
(2021-Apr-01.82138543)
5.6727e-05 TDB
period 1865.144262457095
5.11
9.5576e-06
2.617e-08
d
yr
n .1930145604532192 9.8907e-10 deg/d
Q 3.494751400881266 1.1939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2977  
   data-arc span      43122 days (118.06 yr)  
   first obs. used      1902-10-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45133  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:14  

Additional Information
 Earth MOID = 1.45265 au 
 Jupiter MOID = 1.71806 au 
 T_jup = 3.236 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456603.5 (2013-Nov-07.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744442701736381 3.4393e-08  
q 2.452343577968128 1.0424e-07 au
tp 2457435.136503790427
(2016-Feb-16.63650379)
5.8016e-05 TDB
node 260.8609136490026 5.4723e-05 deg
peri 189.205331618905 5.5936e-05 deg
i 4.295927460225635 3.7447e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2977  
   data-arc span      43122 days (118.06 yr)  
   first obs. used      1902-10-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45133  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:14  

Additional Information
 Jupiter MOID = 1.71806 au 
 T_jup = 3.236 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.182854381192408E-15 -3.573893945344794E-15 -1.108778193266086E-13 -5.39249671996812E-15 9.423890458100956E-15 1.8008453737602E-16
q -3.573893945344794E-15 1.086550360137104E-14 3.390839032592319E-13 1.256497441272441E-14 -3.378847732031051E-14 -4.497715885386876E-17
tp -1.108778193266086E-13 3.390839032592319E-13 3.365869952121401E-9 -2.140563105079822E-12 6.891860220380561E-10 -7.246838360081661E-14
node -5.39249671996812E-15 1.256497441272441E-14 -2.140563105079822E-12 2.994633017606623E-9 -2.986789230345597E-9 -1.772650912691586E-11
peri 9.423890458100956E-15 -3.378847732031051E-14 6.891860220380561E-10 -2.986789230345597E-9 3.128787081140213E-9 1.766254001745951E-11
i 1.8008453737602E-16 -4.497715885386876E-17 -7.246838360081661E-14 -1.772650912691586E-11 1.766254001745951E-11 1.402307834895528E-11

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 9.9   n/a MPO458830  
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 ]
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