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920 Rogeria (A919 RC)
Classification: Main-belt Asteroid          SPK-ID: 2000920
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1051464629054532 3.0432e-08  
a 2.623414371266763 8.16e-09 au
q 2.347571629392729 7.9865e-08 au
i 11.57650316038206 4.7588e-06 deg
node 192.7868737132297 1.7103e-05 deg
peri 268.965913166726 2.9099e-05 deg
M 162.2515942843824 2.3596e-05 deg
tp 2458301.003994234609
(2018-Jul-01.50399423)
0.00010134 TDB
period 1552.025193873734
4.25
7.2412e-06
1.983e-08
d
yr
n .2319549975226034 1.0822e-09 deg/d
Q 2.899257113140796 9.018e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2862  
   data-arc span      36862 days (100.92 yr)  
   first obs. used      1919-09-01  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:24:40  

Additional Information
 Earth MOID = 1.39841 au 
 Jupiter MOID = 2.29288 au 
 T_jup = 3.367 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456194.5 (2012-Sep-24.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106241474205322 3.049e-08  
q 2.342828400387518 8.0078e-08 au
tp 2456752.553940705364
(2014-Apr-05.05394071)
9.9626e-05 TDB
node 192.8997253507689 1.7104e-05 deg
peri 269.2376243987912 2.8871e-05 deg
i 11.57869972739458 4.7604e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2862  
   data-arc span      36862 days (100.92 yr)  
   first obs. used      1919-09-01  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:24:40  

Additional Information
 Jupiter MOID = 2.29288 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.29638297005437E-16 -2.430935241312796E-15 -2.261137242013895E-13 -1.567744716735779E-16 -7.194908066663117E-14 1.381526337188968E-15
q -2.430935241312796E-15 6.412421788206738E-15 5.831906416231085E-13 2.974794454774171E-16 1.798741289152372E-13 -2.958243692128605E-15
tp -2.261137242013895E-13 5.831906416231085E-13 9.925291314231566E-9 -1.628023667516205E-11 2.325327426717459E-9 -5.116584929449751E-12
node -1.567744716735779E-16 2.974794454774171E-16 -1.628023667516205E-11 2.925584358210174E-10 -2.89765812197031E-10 9.803457142752079E-12
peri -7.194908066663117E-14 1.798741289152372E-13 2.325327426717459E-9 -2.89765812197031E-10 8.335320248557657E-10 -1.080288657111807E-11
i 1.381526337188968E-15 -2.958243692128605E-15 -5.116584929449751E-12 9.803457142752079E-12 -1.080288657111807E-11 2.266098848942297E-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 11.3   n/a MPO473775 IRAS observations used: 21
diameter diameter 26.656 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.244 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Polakis, T. (2018) Minor Planet Bull. 45, 112-115.]
geometric albedo albedo 0.076   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.800   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.76 deg.
U-B UB 0.300   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.76 deg.
Tholen spectral type spec_T DTU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

920 Rogeria (A919 RC)          Discovered 1919-Sep-01 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A919 RC = 1973 QC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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