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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787009361100829 3.4545e-08  
a 2.966027829220414 9.8383e-09 au
q 2.435995879610168 1.0525e-07 au
i 4.312942887503699 3.7426e-06 deg
node 260.621955063493 5.2163e-05 deg
peri 189.9486518642365 5.3319e-05 deg
M 339.6077502677805 1.0526e-05 deg
tp 2459306.187566808577
(2021-Apr-01.68756681)
5.4642e-05 TDB
period 1865.783547706018
5.11
9.2832e-06
2.542e-08
d
yr
n .1929484266503583 9.6001e-10 deg/d
Q 3.496059778830658 1.1596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3138  
   data-arc span      43192 days (118.25 yr)  
   first obs. used      1902-10-25  
   last obs. used      2021-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:47:21  

Additional Information
 Earth MOID = 1.45242 au 
 Jupiter MOID = 1.71707 au 
 T_jup = 3.236 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456696.5 (2014-Feb-08.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744524887132738 3.4296e-08  
q 2.452217653040767 1.0407e-07 au
tp 2457435.276543775067
(2016-Feb-16.77654378)
5.6498e-05 TDB
node 260.8598151408909 5.2437e-05 deg
peri 189.2333570844656 5.3675e-05 deg
i 4.295794636603897 3.7326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3138  
   data-arc span      43192 days (118.25 yr)  
   first obs. used      1902-10-25  
   last obs. used      2021-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:47:21  

Additional Information
 Jupiter MOID = 1.71707 au 
 T_jup = 3.236 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.176213433904323E-15 -3.558988702462541E-15 -1.438069685251119E-13 -4.544040848185623E-15 3.918359327988538E-15 1.701373959655098E-16
q -3.558988702462541E-15 1.083158457535535E-14 4.099877467116091E-13 1.040938631112592E-14 -2.172919226505764E-14 -2.227864971807903E-17
tp -1.438069685251119E-13 4.099877467116091E-13 3.192017249918547E-9 -9.838292675151135E-14 6.623405133536062E-10 -1.025614268451326E-13
node -4.544040848185623E-15 1.040938631112592E-14 -9.838292675151135E-14 2.749591045135628E-9 -2.74212244672248E-9 -2.203603466964466E-11
peri 3.918359327988538E-15 -2.172919226505764E-14 6.623405133536062E-10 -2.74212244672248E-9 2.880971592223718E-9 2.19565683286952E-11
i 1.701373959655098E-16 -2.227864971807903E-17 -1.025614268451326E-13 -2.203603466964466E-11 2.19565683286952E-11 1.393219129761788E-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 9.92   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 ]
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