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27090 (1998 UP18)
Classification: Main-belt Asteroid          SPK-ID: 2027090
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08556951741161919 3.2741e-08  
a 2.314522217058398 6.8239e-09 au
q 2.11646966790624 7.6744e-08 au
i 5.502980664223776 3.3893e-06 deg
node 261.25451626 3.8196e-05 deg
peri 158.5568977096074 4.4905e-05 deg
M 43.76202399793178 2.1993e-05 deg
tp 2458844.154510359548
(2019-Dec-26.65451036)
7.8631e-05 TDB
period 1286.146551933311
3.52
5.6879e-06
1.557e-08
d
yr
n .2799058936626273 1.2379e-09 deg/d
Q 2.512574766210555 7.4078e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      14382 days (39.38 yr)  
   first obs. used      1980-09-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50469  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:56:52  

Additional Information
 Earth MOID = 1.13031 au 
 Jupiter MOID = 2.72728 au 
 T_jup = 3.571 
[ 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 14.4   n/a MPO395267  
diameter diameter 3.187 km 0.538 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.398   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27090 (1998 UP18)          Discovered 1998-Oct-25 by Kobayashi, T. at Oizumi
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UP18 = 1980 RW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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