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943 Begonia (A920 UA)
Classification: Main-belt Asteroid          SPK-ID: 2000943
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .213333248573743 3.3641e-08  
a 3.116554049031277 1.3173e-08 au
q 2.451689449395783 1.068e-07 au
i 12.10832676609462 3.9224e-06 deg
node 113.7677186764535 2.1464e-05 deg
peri 4.131385730230232 2.393e-05 deg
M 310.5791832752193 1.2426e-05 deg
tp 2459276.378489180225
(2021-Mar-02.87848918)
7.033e-05 TDB
period 2009.60369914489
5.50
1.2741e-05
3.488e-08
d
yr
n .1791397976392979 1.1358e-09 deg/d
Q 3.781418648666771 1.5983e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2624  
   data-arc span      36441 days (99.77 yr)  
   first obs. used      1920-10-21  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:24:58  

Additional Information
 Earth MOID = 1.4681 au 
 Jupiter MOID = 1.33502 au 
 T_jup = 3.148 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456439.5 (2013-May-27.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2117868444644022 3.3908e-08  
q 2.457926089433712 1.0757e-07 au
tp 2457270.020572154795
(2015-Sep-04.52057215)
6.4411e-05 TDB
node 113.8550994753834 2.1444e-05 deg
peri 4.519772297266008 2.3914e-05 deg
i 12.10983864428123 3.9231e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2624  
   data-arc span      36441 days (99.77 yr)  
   first obs. used      1920-10-21  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:24:58  

Additional Information
 Jupiter MOID = 1.33502 au 
 T_jup = 3.148 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.149749366521192E-15 -3.630595016623691E-15 3.681284169172385E-14 -3.060487418098656E-17 1.945674483716242E-14 -4.002430751939829E-16
q -3.630595016623691E-15 1.157163308636989E-14 1.406329562383456E-13 8.619203395716732E-16 -3.101657437901401E-14 2.087681740049068E-15
tp 3.681284169172385E-14 1.406329562383456E-13 4.148817532648234E-9 -4.043165633099244E-12 7.11714989381752E-10 1.824032589283962E-12
node -3.060487418098656E-17 8.619203395716732E-16 -4.043165633099244E-12 4.59855739578988E-10 -4.49830885403997E-10 1.429999642539549E-12
peri 1.945674483716242E-14 -3.101657437901401E-14 7.11714989381752E-10 -4.49830885403997E-10 5.718758116886122E-10 -1.180221504887173E-12
i -4.002430751939829E-16 2.087681740049068E-15 1.824032589283962E-12 1.429999642539549E-12 -1.180221504887173E-12 1.539061887069754E-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 9.8   n/a MPO502162 IRAS observations used: 11
diameter diameter 70.572 km 2.446 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.66 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.044   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.783   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.48 deg.
Tholen spectral type spec_T ST   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

943 Begonia (A920 UA)          Discovered 1920-Oct-20 by Reinmuth, K. at Heidelberg
Oct. 12 observation by A. Schwassmann, Bergedorf, was apparently a prediscovery.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A920 UA = 1944 DM = 1947 RC = 1977 FU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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