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8669 (1991 NS1)
Classification: Main-belt Asteroid          SPK-ID: 2008669
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765548053470058 5.0504e-08  
a 2.431018592294108 1.2238e-08 AU
q 2.00181057793667 1.1981e-07 AU
i 6.62558871199605 6.9767e-06 deg
node 172.9997639413027 3.7726e-05 deg
peri 126.2924674411291 4.2605e-05 deg
M 65.94002815280868 1.9211e-05 deg
tp 2456746.912714531578
(2014-Mar-30.41271453)
7.3574e-05 JED
period 1384.46138598962
3.79
1.0454e-05
2.862e-08
d
yr
n .2600289207363267 1.9635e-09 deg/d
Q 2.860226606651547 1.4398e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1174  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1991-07-13  
   last obs. used      2015-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52929  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:23:59  

Additional Information
 Earth MOID = .996055 AU 
 T_jup = 3.477 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO266004  

8669 (1991 NS1)          Discovered 1991-Jul-13 by Holt, H. E. at Palomar (675)
Reference: 19980511/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 NS1 = 1987 MR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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