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
JPL Small-Body Database Browser
Search: [ help ]  
958 Asplinda (A921 SD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000958
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845756204346204 2.9638e-08  
a 3.984859265370296 2.4339e-08 au
q 3.249351394119928 1.1666e-07 au
i 5.628803036327815 3.9658e-06 deg
node 343.1191820082888 3.5141e-05 deg
peri 92.94991879976156 3.6769e-05 deg
M 152.9082355775203 1.1908e-05 deg
tp 2457766.411558017052
(2017-Jan-12.91155802)
9.1372e-05 TDB
period 2905.48012300245
7.95
2.6619e-05
7.288e-08
d
yr
n .1239037903408491 1.1352e-09 deg/d
Q 4.720367136620663 2.8831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2783  
   data-arc span      36147 days (98.97 yr)  
   first obs. used      1921-09-28  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42623  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:58  

Additional Information
 Earth MOID = 2.27141 au 
 Jupiter MOID = .714682 au 
 T_jup = 3.018 
[ 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 10.4   n/a MPO473775 IRAS observations used: 10
diameter diameter 45.112 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 16.543 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2018) Minor Planet Bull. 45, 147-161.]
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.834   0.082 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.89 deg.

958 Asplinda (A921 SD)          Discovered 1921-Sep-28 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-30 18:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin