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20472 Mollypettit (1999 NL7)
Classification: Main-belt Asteroid          SPK-ID: 2020472
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299672652063018 3.3332e-08  
a 2.405829648016399 9.1219e-09 au
q 2.093150548111468 8.0782e-08 au
i 3.354508257369502 3.8738e-06 deg
node 135.0138503784233 6.4294e-05 deg
peri 93.12765709528544 6.6105e-05 deg
M 330.0661724038271 1.6205e-05 deg
tp 2459313.832765915994
(2021-Apr-09.33276592)
6.1557e-05 TDB
period 1362.999623040997
3.73
7.7519e-06
2.122e-08
d
yr
n .2641233305676209 1.5022e-09 deg/d
Q 2.718508747921329 1.0307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1189  
   data-arc span      15885 days (43.49 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54859  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:21:57  

Additional Information
 Earth MOID = 1.08521 au 
 Jupiter MOID = 2.26617 au 
 T_jup = 3.509 
[ 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 15.22   n/a E2021B10  
diameter diameter 5.410 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20472 Mollypettit           Discovered 1999 July 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Molly Lauren Pettit (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her biochemistry, medicine, health, and microbiology project. She attends the Beaumont Middle School, Portland, Oregon.
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

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Alternate Designations
 1999 NL7 = 1977 RT14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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