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78117 (2002 NR)
Classification: Main-belt Asteroid          SPK-ID: 2078117
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3232100504918628 3.5418e-08  
a 2.574056931155581 1.25e-08 au
q 1.742095860467856 8.8303e-08 au
i 3.778326580149581 5.4638e-06 deg
node 80.43053515817972 5.4605e-05 deg
peri 260.9284141297754 5.5628e-05 deg
M 85.75055917644923 1.0672e-05 deg
tp 2458641.197607570693
(2019-Jun-06.69760757)
4.4346e-05 TDB
period 1508.431694403169
4.13
1.0988e-05
3.008e-08
d
yr
n .2386584698105531 1.7384e-09 deg/d
Q 3.406018001843306 1.654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      12386 days (33.91 yr)  
   first obs. used      1986-11-25  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47625  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:11  

Additional Information
 Earth MOID = .738851 au 
 Jupiter MOID = 2.01651 au 
 T_jup = 3.350 
[ 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 15.1   n/a MPO432332  
diameter diameter 2.284 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.309   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

78117 (2002 NR)          Discovered 2002-Jul-04 by Broughton, J. at Reedy Creek
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 NR = 1986 WR4 = 1994 RO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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