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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 
[ 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 16:12 00:02 Jupiter 1.75043465263485 1.75043405466898 1.75043525060111 2.00803924150029 1.75055312251342 2415455.175073187 1.94109600364983 106.142854668789 20.7121140215119 78.7204153764472 2100320.69204134 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
1937-Feb-19 13:40 00:01 Jupiter 1.73063894123515 1.73063859531323 1.73063928715697 1.97326495339769 1.70731347907417 2428584.069681340 1.27344463425205 94.2063568334345 22.3231234999286 77.7879554026086 2739820.43633464 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
1973-Jan-29 05:49 < 00:01 Jupiter 1.72514378022466 1.72514346008448 1.72514410036484 1.94566168323471 1.67440321999325 2441711.742548638 0.678775767637518 97.9032493165794 23.3687113054951 77.7861061952942 3142922.70054369 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2009-Jan-10 19:23 < 00:01 Jupiter 1.74947553772272 1.74947518489721 1.74947589054814 1.98066126979658 1.71892499431319 2454842.307783500 0.211943690079583 86.5595727181454 22.3204458282537 80.5646582284556 3000492.34654885 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2045-Jan-03 21:05 < 00:01 Jupiter 1.80778694692055 1.8077865155757 1.80778737826528 2.13690859689346 1.90507115799741 2467984.378142753 0.53713275849228 63.0436307400851 16.26092853095 88.4747506976881 2526611.43785928 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2081-Jan-08 15:11 00:01 Jupiter 1.8793459506302 1.87934534464908 1.87934655661121 2.44491027662632 2.25303903244011 2481138.132426418 1.0724638700306 62.3440500926517 11.8228224488993 89.7241904203779 2292078.30679363 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2117-Jan-19 16:14 00:02 Jupiter 1.97989234084391 1.97989153599124 1.97989314569703 2.98925437205661 2.84253704969835 2494297.176182224 1.54007668436689 80.8908241004787 17.0472599153732 79.0608616814721 2580960.62273081 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2125-Aug-27 09:49 00:02 Jupiter 1.97773946184195 1.97773852025663 1.97774040342771 2.49781890833863 2.32003083640466 2497438.909068207 1.64327952229983 84.232885117836 13.8782202262852 69.3675114023878 2451457.79425421 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2161-Sep-02 12:12 00:02 Jupiter 1.86628945219138 1.86628850859031 1.86629039579329 2.24970339072409 2.03800338403875 2510594.008570629 2.03945013701099 102.401580926686 13.7123800399273 74.4380637213122 2190510.87035254 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47
2197-Aug-30 13:38 00:02 Jupiter 1.78403517786119 1.78403435806336 1.78403599765994 2.07294449255894 1.82962859118369 2523740.068210487 2.37976851594313 111.115908952886 17.7871608451066 78.8043510785304 2000109.44848395 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:29 2021-Feb-24 00:47

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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