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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2038192713317535 5.1874e-08  
a 2.531660884527651 1.0819e-08 au
q 2.015659607784122 1.3398e-07 au
i 10.73037927838261 1.0028e-05 deg
node 70.30662866175349 4.3333e-05 deg
peri 37.55061642549847 7.3017e-05 deg
M 347.4033193151662 5.2959e-05 deg
tp 2458651.982584854033
(2019-Jun-17.48258485)
0.00021657 TDB
period 1471.318596633643
4.03
9.4313e-06
2.582e-08
d
yr
n .2446784814816282 1.5684e-09 deg/d
Q 3.047662161271179 1.3024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1325  
   data-arc span      14958 days (40.95 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50154  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:41:07  

Additional Information
 Earth MOID = 1.04361 au 
 Jupiter MOID = 2.15702 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 14.7   n/a MPO381623  
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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