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JPL Small-Body Database Browser
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18855 Sarahgutman (1999 RQ112)
Classification: Main-belt Asteroid          SPK-ID: 2018855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744624778492973 3.6181e-08  
a 2.435552306810089 8.0783e-09 au
q 2.010639816432429 8.767e-08 au
i 4.516887980657858 4.0796e-06 deg
node 218.1800874723812 5.1388e-05 deg
peri 61.86219230908573 5.2645e-05 deg
M 195.919763271662 1.2478e-05 deg
tp 2459633.273658319367
(2022-Feb-22.77365832)
4.9157e-05 TDB
period 1388.336106390012
3.80
6.9073e-06
1.891e-08
d
yr
n .2593032035564367 1.2901e-09 deg/d
Q 2.860464797187749 9.4876e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1568  
   data-arc span      23783 days (65.11 yr)  
   first obs. used      1954-12-21  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:36:11  

Additional Information
 Earth MOID = .999081 au 
 Jupiter MOID = 2.27619 au 
 T_jup = 3.480 
[ 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 14.6   n/a MPO452438  
diameter diameter 3.538 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.245   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18855 Sarahgutman           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sarah Elizabeth Gutman (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for her medicine and health project. She attends the Mount de Chantal Visitation Academy, Wheeling, West Virginia, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 RQ112 = 1988 UN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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