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27754 (1991 PP9)
Classification: Main-belt Asteroid          SPK-ID: 2027754
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2137181024465334 3.0339e-08  
a 2.779620978255363 1.1891e-08 au
q 2.18556565726205 8.7992e-08 au
i 6.816471161281181 4.6356e-06 deg
node 327.8998796502437 2.604e-05 deg
peri 103.6296193747699 2.8064e-05 deg
M 258.2607032482704 1.0941e-05 deg
tp 2459078.869000488399
(2020-Aug-17.36900049)
5.298e-05 TDB
period 1692.687542317772
4.63
1.0862e-05
2.974e-08
d
yr
n .212679535354208 1.3648e-09 deg/d
Q 3.373676299248676 1.4433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1628  
   data-arc span      11753 days (32.18 yr)  
   first obs. used      1987-09-23  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46254  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:07:38  

Additional Information
 Earth MOID = 1.21202 au 
 Jupiter MOID = 1.96826 au 
 T_jup = 3.290 
[ 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 13.7   n/a MPO452559  
diameter diameter 11.470 km 2.951 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.041   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

27754 (1991 PP9)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PP9 = 1987 SU14 = 1987 UK6 = 1998 DP35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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