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20581 Prendergast (1999 RQ152)
Classification: Main-belt Asteroid          SPK-ID: 2020581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1467898740481357 4.8039e-08  
a 2.572099434183598 1.1469e-08 au
q 2.194541282200506 1.2781e-07 au
i 2.988855383179911 3.5124e-06 deg
node 265.3375123914876 8.3943e-05 deg
peri 281.1137853523817 8.5071e-05 deg
M 202.4393950096331 1.7035e-05 deg
tp 2459859.939863005239
(2022-Oct-07.43986301)
7.4237e-05 TDB
period 1506.711342574498
4.13
1.0078e-05
2.759e-08
d
yr
n .2389309682801437 1.5981e-09 deg/d
Q 2.949657586166689 1.3153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1471  
   data-arc span      8785 days (24.05 yr)  
   first obs. used      1996-12-17  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51597  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:28  

Additional Information
 Earth MOID = 1.19767 au 
 Jupiter MOID = 2.02453 au 
 T_jup = 3.412 
[ 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 14.52   n/a E2021B10  
diameter diameter 2.792 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20581 Prendergast           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Dana Prendergast mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Arcola Intermediate School, Norristown, Pennsylvania.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RQ152 = 1998 KN17 = 2000 UD10 = 2003 PL7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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