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201377 (2002 UN15)
Classification: Outer Main-belt Asteroid          SPK-ID: 2201377
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07476962263163887 4.1813e-08  
a 3.244929276187506 3.5484e-08 au
q 3.002307138740609 1.3901e-07 au
i 20.61916904634149 5.0452e-06 deg
node 201.5828843704778 1.3242e-05 deg
peri 133.2908895986278 3.6882e-05 deg
M 61.77039513749443 3.2853e-05 deg
tp 2458634.160153465519
(2019-May-30.66015347)
0.00019585 TDB
period 2135.041300267821
5.85
3.5021e-05
9.588e-08
d
yr
n .1686150052248832 2.7658e-09 deg/d
Q 3.487551413634402 3.8137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      498  
   data-arc span      8476 days (23.21 yr)  
   first obs. used      1996-09-12  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:21:43  

Additional Information
 Earth MOID = 2.02967 au 
 Jupiter MOID = 1.87284 au 
 T_jup = 3.078 
[ 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 14.7   n/a MPO454426  
diameter diameter 7.279 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.787 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.044   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201377 (2002 UN15)          Discovered 2002-Oct-30 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

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Alternate Designations
 2002 UN15 = 2000 GF128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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