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70694 (1999 US23)
Classification: Main-belt Asteroid          SPK-ID: 2070694
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0817928811886084 2.9207e-08  
a 2.407695836209671 8.3076e-09 au
q 2.210763456740267 6.854e-08 au
i 5.553668494831498 4.4379e-06 deg
node 234.4498221017643 3.9489e-05 deg
peri 220.0194251569806 5.1923e-05 deg
M 113.3610529142786 3.2847e-05 deg
tp 2458570.803090912816
(2019-Mar-28.30309091)
0.00012419 TDB
period 1364.585836974895
3.74
7.0626e-06
1.934e-08
d
yr
n .2638163098615124 1.3654e-09 deg/d
Q 2.604628215679076 8.9871e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1453  
   data-arc span      15555 days (42.59 yr)  
   first obs. used      1977-12-07  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5012  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:59:35  

Additional Information
 Earth MOID = 1.23061 au 
 Jupiter MOID = 2.53809 au 
 T_jup = 3.511 
[ 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 14.9   n/a MPO502590  
diameter diameter 2.575 km 0.381 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.351   0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70694 (1999 US23)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 US23 = 1977 XW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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