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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2139778053956258 3.0282e-08  
a 2.779660540705725 1.1791e-08 au
q 2.184874878460695 8.7904e-08 au
i 6.817029850844771 4.6228e-06 deg
node 327.897053459573 2.594e-05 deg
peri 103.6562955944735 2.7968e-05 deg
M 343.3369605394724 1.1178e-05 deg
tp 2459078.849781903305
(2020-Aug-17.34978190)
5.2818e-05 TDB
period 1692.723680574937
4.63
1.077e-05
2.949e-08
d
yr
n .2126749948212015 1.3532e-09 deg/d
Q 3.374446202950755 1.4313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1674  
   data-arc span      11802 days (32.31 yr)  
   first obs. used      1987-09-23  
   last obs. used      2020-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46595  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:09:35  

Additional Information
 Earth MOID = 1.21153 au 
 Jupiter MOID = 1.9673 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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