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27750 (1991 CW2)
Classification: Main-belt Asteroid          SPK-ID: 2027750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278536102002024 4.7827e-08  
a 2.485115085032702 9.569e-09 au
q 2.167384149648288 1.1892e-07 au
i 8.034290755592007 3.9344e-06 deg
node 13.44175861541957 3.6679e-05 deg
peri 80.69995359525015 4.0101e-05 deg
M 133.9934011953291 1.5508e-05 deg
tp 2458067.902534275770
(2017-Nov-10.40253428)
6.1813e-05 TDB
period 1430.929328984048
3.92
8.2648e-06
2.263e-08
d
yr
n .2515847517470328 1.4531e-09 deg/d
Q 2.802846020417116 1.0792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1298  
   data-arc span      13733 days (37.60 yr)  
   first obs. used      1981-09-25  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52548  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:28:50  

Additional Information
 Earth MOID = 1.20112 au 
 Jupiter MOID = 2.38773 au 
 T_jup = 3.451 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO435956  
diameter diameter 4.174 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27750 (1991 CW2)          Discovered 1991-Feb-14 by Helin, E. F. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 CW2 = 1981 SS4 = 1995 GX8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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