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JPL Small-Body Database Browser
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20478 Rutenberg (1999 NJ20)
Classification: Main-belt Asteroid          SPK-ID: 2020478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731736466039314 4.1154e-08  
a 2.597186258125771 1.4428e-08 au
q 2.147422042896511 1.0904e-07 au
i 5.978055614777117 3.4534e-06 deg
node 107.6168114233871 4.3108e-05 deg
peri 230.0390129765803 4.4011e-05 deg
M 228.1541940792968 9.9378e-06 deg
tp 2459160.408279839872
(2020-Nov-06.90827984)
4.3597e-05 TDB
period 1528.808439030542
4.19
1.2739e-05
3.488e-08
d
yr
n .2354775070631384 1.9621e-09 deg/d
Q 3.04695047335503 1.6926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1367  
   data-arc span      8169 days (22.37 yr)  
   first obs. used      1996-12-18  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:41:42  

Additional Information
 Earth MOID = 1.14272 au 
 Jupiter MOID = 2.33355 au 
 T_jup = 3.388 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO435889  
diameter diameter 3.723 km 0.633 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.320   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20478 Rutenberg           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Lev Rutenberg- Schoenberg (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochemistry, medicine, health, and microbiology project. He attends the Portland Jewish Academy, 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

Alternate Designations
 1999 NJ20 = 1998 HK135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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