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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845756197526669 2.9708e-08  
a 3.984859265797653 2.4395e-08 au
q 3.249351397185894 1.1704e-07 au
i 5.628803930492539 4.087e-06 deg
node 343.1191807260051 3.5178e-05 deg
peri 92.94991945045901 3.6882e-05 deg
M 152.9082360118066 1.2027e-05 deg
tp 2457766.411554313498
(2017-Jan-12.91155431)
9.2491e-05 TDB
period 2905.480123469849
7.95
2.6681e-05
7.305e-08
d
yr
n .1239037903209169 1.1378e-09 deg/d
Q 4.720367134409412 2.8898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2685  
   data-arc span      36057 days (98.72 yr)  
   first obs. used      1921-09-28  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:23:36  

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 ]
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