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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787008856907655 1.8359e-08  
a 2.966027830924994 8.4598e-09 au
q 2.435996030555237 5.6273e-08 au
i 4.312940509630859 8.0517e-07 deg
node 260.6219942969002 5.8091e-06 deg
peri 189.9486032688101 8.0263e-06 deg
M 339.6077625663746 3.3256e-06 deg
tp 2459306.187503159367
(2021-Apr-01.68750316)
1.7306e-05 TDB
period 1865.78354931442
5.11
7.9825e-06
2.185e-08
d
yr
n .1929484264840268 8.255e-10 deg/d
Q 3.49605963129475 9.9716e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3250  
   data-arc span      43250 days (118.41 yr)  
   first obs. used      1902-10-25  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44126  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:31:23  

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

[ 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 16:15 00:02 Jupiter 1.75043419482307 1.75043379887903 1.75043459076761 2.00803802464152 1.75055165589955 2415455.177005445 1.61378375887347 61.6965613548103 4.38097729773172 82.0430216910146 5285038.86422005 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
1937-Feb-19 13:41 00:01 Jupiter 1.73063907458393 1.73063887065769 1.73063927851017 1.97326463629574 1.70731313624834 2428584.069919717 1.06034315492079 28.8535980689563 5.4803628293511 83.3534621906976 5560630.02758287 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
1973-Jan-29 05:49 < 00:01 Jupiter 1.72514393641102 1.72514373359946 1.72514413922248 1.94566199157885 1.6744036064577 2441711.742426922 0.558502405759105 22.3179080341646 5.02302509764454 76.9240410298176 5806967.62445603 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2009-Jan-10 19:23 < 00:01 Jupiter 1.74947567236738 1.74947545864009 1.74947588609457 1.98066174254225 1.7189255622762 2454842.307739161 0.123534698905338 19.6594885964142 5.27076642203159 82.2845549056014 5147899.39648537 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2045-Jan-03 21:06 < 00:01 Jupiter 1.8077874611385 1.80778719060477 1.80778773167224 2.13691112735077 1.90507406771444 2467984.378944829 0.443494930738345 22.823349589983 3.07067369067753 -89.5864311243079 4399394.61520939 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2081-Jan-08 15:15 < 00:01 Jupiter 1.87934792980706 1.87934748154079 1.87934837807343 2.44492088194758 2.25305075268878 2481138.135611156 0.918377455765038 43.4048921578018 2.60471079356804 84.0653288114936 4813382.29145025 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2117-Jan-19 16:22 00:01 Jupiter 1.97989604348218 1.97989539091441 1.97989669605052 2.98927800004331 2.84256217951989 2494297.181757032 1.3276553420245 66.0751689202061 4.65604976997449 75.1782466855039 6429127.90550003 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2125-Aug-27 09:58 00:01 Jupiter 1.97773458338925 1.97773377858992 1.97773538818892 2.49780711050593 2.32001768014472 2497438.915191946 1.40652882739695 64.5673440834057 2.47495853252653 65.7658126670171 7660097.24675017 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2161-Sep-02 12:24 00:02 Jupiter 1.86628417890316 1.86628335763738 1.86628500016968 2.24969203863793 2.03799022472285 2510594.016739422 1.74763276151488 77.5439199467536 1.86212160420973 72.873995810936 6133559.30826778 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32
2197-Aug-30 13:53 00:02 Jupiter 1.7840304717786 1.78402975574888 1.78403118780913 2.07293403878795 1.82961606410322 2523740.078131660 2.03253698973177 78.538297110356 2.90845629375842 79.9755108483157 5220049.94164651 T 42 CATAB v2.0g-lin.ifort 2021-May-03 18:32:52 2021-May-03 18:32

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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