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78157 (2002 NQ27)
Classification: Main-belt Asteroid          SPK-ID: 2078157
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1796169418126192 4.2707e-08  
a 3.15697210045729 2.0315e-08 au
q 2.58992642638539 1.3382e-07 au
i 4.332741365035466 5.2861e-06 deg
node 228.8955952417471 6.2835e-05 deg
peri 70.26331485199302 6.4706e-05 deg
M 77.65702678027016 1.4561e-05 deg
tp 2458558.540167017847
(2019-Mar-16.04016702)
8.1867e-05 TDB
period 2048.823480246841
5.61
1.9776e-05
5.414e-08
d
yr
n .1757105985317132 1.6961e-09 deg/d
Q 3.724017774529189 2.3964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      10194 days (27.91 yr)  
   first obs. used      1992-11-27  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:59  

Additional Information
 Earth MOID = 1.5784 au 
 Jupiter MOID = 1.52188 au 
 T_jup = 3.176 
[ 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 15.0   n/a MPO449492  
diameter diameter 5.666 km 1.595 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78157 (2002 NQ27)          Discovered 2002-Jul-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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