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JPL Small-Body Database Browser
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515 Athalia (A903 SH)
Classification: Main-belt Asteroid          SPK-ID: 2000515
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 .1756921448772098 3.5501e-08  
a 3.120856744539803 1.2575e-08 au
q 2.572546729237099 1.1522e-07 au
i 2.038477875050232 3.6342e-06 deg
node 121.0914050907187 0.00011473 deg
peri 300.3011747203087 0.00011521 deg
M 357.4314030343795 1.072e-05 deg
tp 2459014.868209180834
(2020-Jun-14.36820918)
5.9993e-05 TDB
period 2013.766805120689
5.51
1.2171e-05
3.332e-08
d
yr
n .178769457856082 1.0805e-09 deg/d
Q 3.669166759842508 1.4784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2799  
   data-arc span      42475 days (116.29 yr)  
   first obs. used      1903-09-20  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:30:47  

Additional Information
 Earth MOID = 1.58623 au 
 Jupiter MOID = 1.66671 au 
 T_jup = 3.191 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456179.5 (2012-Sep-09.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699847097026101 3.5158e-08  
q 2.59515132069395 1.1341e-07 au
tp 2456994.058629434775
(2014-Dec-02.55862944)
6.1044e-05 TDB
node 121.2108417144398 0.00011446 deg
peri 299.5488234573489 0.00011499 deg
i 2.037896563551385 3.637e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2799  
   data-arc span      42475 days (116.29 yr)  
   first obs. used      1903-09-20  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:30:47  

Additional Information
 Jupiter MOID = 1.66671 au 
 T_jup = 3.191 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.236118147992628E-15 -3.972234596670901E-15 -2.673642471114237E-13 -3.581523348139505E-15 -3.995019000996825E-14 -2.474161294954265E-16
q -3.972234596670901E-15 1.286225562989669E-14 8.725806677164774E-13 1.451889575205616E-14 1.175979127101809E-13 9.504684424631382E-16
tp -2.673642471114237E-13 8.725806677164774E-13 3.726396357641919E-9 -2.302329172897713E-12 7.003556752948033E-10 -7.439882803584773E-14
node -3.581523348139505E-15 1.451889575205616E-14 -2.302329172897713E-12 1.310052350372076E-8 -1.30922873447082E-8 1.158428968410273E-11
peri -3.995019000996825E-14 1.175979127101809E-13 7.003556752948033E-10 -1.30922873447082E-8 1.322342435456372E-8 -1.159759301290181E-11
i -2.474161294954265E-16 9.504684424631382E-16 -7.439882803584773E-14 1.158428968410273E-11 -1.159759301290181E-11 1.322770071771245E-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 10.8   n/a MPO502158 IRAS observations used: 8
diameter diameter 41.190 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.636 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2015) Minor Planet Bull. 42, 91-94.]
geometric albedo albedo 0.039   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.875   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.50 deg.
U-B UB 0.415   0.050 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.50 deg.
Tholen spectral type spec_T I   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Cb   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)

515 Athalia (A903 SH)          Discovered 1903-Sep-20 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A903 SH = 1931 TQ = 1937 WO = 1937 WQ = 1937 WR = 1937 YH = 1953 TD = 1974 QA3 = 1977 CF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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