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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842561578367753 1.9397e-08  
a 3.985708296091494 2.1777e-08 au
q 3.251316999195515 8.1234e-08 au
i 5.628693957255518 1.4409e-06 deg
node 343.1099670433946 5.5251e-06 deg
peri 92.89021538049508 9.0439e-06 deg
M 177.7913379734524 6.6564e-06 deg
tp 2457765.126941953741
(2017-Jan-11.62694195)		 5.0548e-05 TDB
period 2906.408753017042
7.96		 2.382e-05
6.522e-08		 d
yr
n .1238642016978157 1.0151e-09 deg/d
Q 4.720099592987474 2.5789e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2816  
   data-arc span      36147 days (98.97 yr)  
   first obs. used      1921-09-28  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:41:15  

Additional Information
 Earth MOID = 2.27293 au 
 Jupiter MOID = .715274 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. 2020-October); 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 2021-Apr-22 15:26 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin