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49284 (1998 US29)
Classification: Main-belt Asteroid          SPK-ID: 2049284
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028359664925799 4.2998e-08  
a 2.532597843033241 9.5706e-09 au
q 2.018895911804571 1.1053e-07 au
i 10.72456708988752 9.2363e-06 deg
node 70.29273382369637 4.1231e-05 deg
peri 37.57709331922911 6.6414e-05 deg
M 182.2064669662672 4.7701e-05 deg
tp 2460123.544904808119
(2023-Jun-28.04490481)
0.0001968 TDB
period 1472.135466711624
4.03
8.3447e-06
2.285e-08
d
yr
n .2445427123661034 1.3862e-09 deg/d
Q 3.046299774261912 1.1512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      15558 days (42.60 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48397  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:38:48  

Additional Information
 Earth MOID = 1.0469 au 
 Jupiter MOID = 2.15736 au 
 T_jup = 3.397 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.75   n/a E2021B10  
diameter diameter 3.503 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49284 (1998 US29)          Discovered 1998-Oct-18 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 US29 = 1978 WN10 = 1990 WP12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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