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27085 (1998 UA1)
Classification: Main-belt Asteroid          SPK-ID: 2027085
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733617645455697 3.303e-08  
a 2.309180887626122 5.6237e-09 au
q 1.908857214292353 7.7055e-08 au
i 4.861502714689125 4.1013e-06 deg
node 49.57674122367046 4.2679e-05 deg
peri 15.20027814052901 4.4689e-05 deg
M 90.38624123840745 1.2305e-05 deg
tp 2458878.700634112585
(2020-Jan-30.20063411)
4.3643e-05 TDB
period 1281.696972152027
3.51
4.6821e-06
1.282e-08
d
yr
n .2808776238236279 1.0261e-09 deg/d
Q 2.709504560959892 6.5987e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1450  
   data-arc span      14856 days (40.67 yr)  
   first obs. used      1980-07-12  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51982  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:32:03  

Additional Information
 Earth MOID = .922067 au 
 Jupiter MOID = 2.60071 au 
 T_jup = 3.561 
[ 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 15.10   n/a E2021B10  
diameter diameter 3.551 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.128   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27085 (1998 UA1)          Discovered 1998-Oct-19 by Stafford, T. at Zeno
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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