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37589 (1991 NN9)
Classification: Main-belt Asteroid          SPK-ID: 2037589
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739744182816153 3.7731e-08  
a 2.537136824463229 1.6563e-08 au
q 2.095739921326374 9.9827e-08 au
i 6.746618854424755 4.5618e-06 deg
node 208.4793231032682 3.9239e-05 deg
peri 151.2106213000025 4.2902e-05 deg
M 4.494929608950663 1.8773e-05 deg
tp 2458982.069604524904
(2020-May-12.56960452)
7.6952e-05 TDB
period 1476.094833125401
4.04
1.4454e-05
3.957e-08
d
yr
n .2438867692787435 2.3882e-09 deg/d
Q 2.978533727600084 1.9444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      990  
   data-arc span      10280 days (28.15 yr)  
   first obs. used      1991-07-09  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:34:37  

Additional Information
 Earth MOID = 1.09583 au 
 Jupiter MOID = 2.49714 au 
 T_jup = 3.417 
[ 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 14.2   n/a MPO439350  
diameter diameter 4.260 km 0.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.223   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37589 (1991 NN9)          Discovered 1991-Jul-09 by Helin, E. F., Lawrence, K. J. at Palomar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 NN9 = 1998 FU14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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