Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744425391948667 3.1984e-08  
a 2.435415716893208 7.4513e-09 au
q 2.01057561524327 7.8709e-08 au
i 4.516888238724622 3.775e-06 deg
node 218.169325235706 4.9673e-05 deg
peri 61.91397758283984 5.0917e-05 deg
M 247.7265918447673 1.2509e-05 deg
tp 2459633.444761276793
(2022-Feb-22.94476128)
4.8893e-05 TDB
period 1388.219317651321
3.80
6.371e-06
1.744e-08
d
yr
n .2593250183328894 1.1901e-09 deg/d
Q 2.860255818543146 8.7511e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1696  
   data-arc span      24194 days (66.24 yr)  
   first obs. used      1954-12-21  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:39:59  

Additional Information
 Earth MOID = .99716 au 
 Jupiter MOID = 2.27566 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 14.56   n/a E2021B10  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 12:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin