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 ]  
181878 (1999 OT)
Classification: Main-belt Asteroid          SPK-ID: 2181878
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1541160749827059 5.0168e-08  
a 3.099162443899274 2.919e-08 au
q 2.621531692311707 1.6371e-07 au
i 13.32857951776266 4.8024e-06 deg
node 148.6182684182236 3.2563e-05 deg
peri 205.8241425630646 3.9997e-05 deg
M 307.0046671707194 2.6059e-05 deg
tp 2459493.859435304618
(2021-Oct-06.35943530)
0.00014605 TDB
period 1992.805612710713
5.46
2.8155e-05
7.708e-08
d
yr
n .1806498324291199 2.5523e-09 deg/d
Q 3.57679319548684 3.3689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      7704 days (21.09 yr)  
   first obs. used      1999-07-17  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53636  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:25  

Additional Information
 Earth MOID = 1.62036 au 
 Jupiter MOID = 1.86338 au 
 T_jup = 3.163 
[ 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 15.63   n/a E2021B55  
diameter diameter 3.257 km 1.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.105   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181878 (1999 OT)          Discovered 1999-Jul-17 by Bickel, W. at Bergisch Gladbach
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-06 13:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin