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27755 (1991 PD11)
Classification: Main-belt Asteroid          SPK-ID: 2027755
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198919702183667 2.7967e-08  
a 2.207636695106821 6.2486e-09 au
q 1.768494261186437 6.3646e-08 au
i 6.349199701777923 3.7524e-06 deg
node 141.4341543010083 3.0639e-05 deg
peri 135.5604780854257 3.2464e-05 deg
M 316.0798604627197 1.0466e-05 deg
tp 2459146.667575628314
(2020-Oct-24.16757563)
3.4964e-05 TDB
period 1198.091075770098
3.28
5.0867e-06
1.393e-08
d
yr
n .3004779914319973 1.2757e-09 deg/d
Q 2.646779129027205 7.4916e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      10543 days (28.87 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:35:40  

Additional Information
 Earth MOID = .758804 au 
 Jupiter MOID = 2.49821 au 
 T_jup = 3.626 
[ 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 14.6   n/a MPO347729  
diameter diameter 2.740 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.448   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27755 (1991 PD11)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PD11 = 1998 TM6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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