Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1760325049790918 1.9517e-08  
a 3.121822583943088 9.9026e-09 au
q 2.572280334391285 6.0523e-08 au
i 2.038574657910739 9.7122e-07 deg
node 121.0903674868039 2.041e-05 deg
peri 300.2861230727783 2.1439e-05 deg
M 68.19633885550239 4.9143e-06 deg
tp 2459014.846443973929
(2020-Jun-14.34644397)
2.6763e-05 TDB
period 2014.701705035885
5.52
9.5861e-06
2.625e-08
d
yr
n .1786865018777496 8.5021e-10 deg/d
Q 3.671364833494891 1.1646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      42996 days (117.72 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:10:27  

Additional Information
 Earth MOID = 1.58561 au 
 Jupiter MOID = 1.66623 au 
 T_jup = 3.191 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456716.5 (2014-Feb-28.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699545046704231 1.9067e-08  
q 2.593756373411094 5.8402e-08 au
tp 2456994.838266642703
(2014-Dec-03.33826664)
2.7341e-05 TDB
node 121.2108027424947 2.031e-05 deg
peri 299.7437126080914 2.1433e-05 deg
i 2.038275447570316 9.725e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      42996 days (117.72 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:10:27  

Additional Information
 Jupiter MOID = 1.66623 au 
 T_jup = 3.191 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.635480424070622E-16 -1.102409743578032E-15 -3.849395888834338E-13 2.77455192332372E-14 -1.328178956466768E-13 -5.079627508110235E-15
q -1.102409743578032E-15 3.410800973124141E-15 1.18690482117235E-12 -8.748405932403242E-14 4.114766535577897E-13 1.56704066943977E-14
tp -3.849395888834338E-13 1.18690482117235E-12 7.475356445742819E-10 6.727266326009836E-12 1.810026388441413E-10 2.679655173072553E-12
node 2.77455192332372E-14 -8.748405932403242E-14 6.727266326009836E-12 4.124804343971691E-10 -4.118929223160131E-10 -7.668826843792742E-12
peri -1.328178956466768E-13 4.114766535577897E-13 1.810026388441413E-10 -4.118929223160131E-10 4.593757751158389E-10 8.658341491375866E-12
i -5.079627508110235E-15 1.56704066943977E-14 2.679655173072553E-12 -7.668826843792742E-12 8.658341491375866E-12 9.457518311210377E-13

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 10.88   n/a E2021B10 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. 2020-October); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 11:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin