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134528 (1999 RQ38)
Classification: Main-belt Asteroid          SPK-ID: 2134528
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656082593227746 3.1923e-08  
a 2.350515026064124 9.7691e-09 au
q 1.961250324085618 7.7813e-08 au
i 7.602789641570235 4.5916e-06 deg
node 61.93546310418757 3.3526e-05 deg
peri 218.9115306980168 3.7223e-05 deg
M 16.81337309973307 1.5819e-05 deg
tp 2459139.025454830851
(2020-Oct-16.52545483)
5.7823e-05 TDB
period 1316.263912637796
3.60
8.2059e-06
2.247e-08
d
yr
n .2735013826205712 1.7051e-09 deg/d
Q 2.73977972804263 1.1387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      7596 days (20.80 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:46  

Additional Information
 Earth MOID = .949699 au 
 Jupiter MOID = 2.39378 au 
 T_jup = 3.528 
[ 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 16.33   n/a E2021B55  
diameter diameter 1.732 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134528 (1999 RQ38)          Discovered 1999-Sep-12 by Pravec, P., Kusnirak, P. at Ondrejov
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

Alternate Designations
 1999 RQ38 = 2002 JU14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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