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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 
[ 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 9.9   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-Mar-11 16:12 00:02 Jupiter 1.75043466779149 1.75043406579922 1.75043526978415 2.00803913811078 1.75055300631 2415455.175007808 1.99428375052537 107.957226280211 21.3450500418042 79.0197314290082 2094150.21542489 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
1937-Feb-19 13:40 00:01 Jupiter 1.73063894336226 1.73063859642245 1.73063929030187 1.97326476334749 1.70731325977183 2428584.069644602 1.3067507123116 94.4572969935805 23.2473962458907 77.9010206467694 2706703.6810232 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
1973-Jan-29 05:49 < 00:01 Jupiter 1.72514377677537 1.72514344938676 1.72514410416388 1.94566143952575 1.6744029362164 2441711.742525273 0.694708979634328 98.1206135572399 24.3493563385419 77.5408681221465 3065016.84712958 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2009-Jan-10 19:23 < 00:01 Jupiter 1.74947553557292 1.749475176662 1.74947589448385 1.98066102593669 1.71892471297526 2454842.307787863 0.212207334986668 87.1336997526669 23.1591087036076 80.0837799058541 2939870.0057931 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2045-Jan-03 21:05 < 00:01 Jupiter 1.80778695177661 1.80778651956354 1.80778738398958 2.13690840639705 1.90507094497922 2467984.378164169 0.553301298326732 63.8308020632177 16.8790478334974 87.9514135156624 2510503.00276827 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2081-Jan-08 15:11 00:01 Jupiter 1.87934596662939 1.87934535810446 1.87934657515431 2.44491022665081 2.25303897991161 2481138.132468293 1.10838425530235 64.0024572954319 11.9541798954822 89.4885931332861 2282463.89133801 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2117-Jan-19 16:14 00:02 Jupiter 1.97989236765375 1.97989155168612 1.97989318362182 2.98925454868256 2.84253723747882 2494297.176245753 1.59476100552328 83.5360426722748 17.0620809139617 79.1322135056067 2573375.86124402 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2125-Aug-27 09:49 00:02 Jupiter 1.9777394064084 1.97773844008129 1.97774037273619 2.49781878933611 2.32003070310866 2497438.909128608 1.69573593267231 86.933119031764 14.2293878420442 69.5485843859682 2421563.02733945 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2161-Sep-02 12:12 00:02 Jupiter 1.86628939739173 1.86628842230429 1.86629037248012 2.24970317549104 2.03800313990914 2510594.008653608 2.10808206597176 105.429933978533 14.1946830404049 74.6000589674843 2167934.89478024 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54
2197-Aug-30 13:38 00:02 Jupiter 1.78403513278863 1.78403428035474 1.78403598522344 2.07294425584087 1.82962831642934 2523740.068295379 2.46161744169658 113.746698738663 18.4743170110718 79.059692362016 1966408.72176671 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:22 2020-Dec-18 01:54

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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