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 ]  
55874 Brlka (1997 UL9)
Classification: Main-belt Asteroid          SPK-ID: 2055874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171275239449757 3.0582e-08  
a 2.606181087422315 1.0598e-08 au
q 2.040307440958083 8.0138e-08 au
i 14.29258318100889 7.3463e-06 deg
node 36.74899225355414 1.3219e-05 deg
peri 74.04761813471166 2.254e-05 deg
M 128.6597960427973 1.7225e-05 deg
tp 2458651.280854639760
(2019-Jun-16.78085464)
7.2202e-05 TDB
period 1536.757389728159
4.21
9.3742e-06
2.567e-08
d
yr
n .2342594884568484 1.429e-09 deg/d
Q 3.172054733886546 1.29e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1119  
   data-arc span      8274 days (22.65 yr)  
   first obs. used      1997-10-28  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50588  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:12:40  

Additional Information
 Earth MOID = 1.10826 au 
 Jupiter MOID = 2.16957 au 
 T_jup = 3.335 
[ 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 14.84   n/a MPCxxxxx  
diameter diameter 3.994 km 1.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.160   0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

55874 Brlka           Discovered 1997 Oct. 28 by P. Pravec at Ondřejov.
Petr Brlka (1945-1966), a Czech amateur astronomer, was a member since 1959 and from 1963 the chairman of the Meteor Observers Group in Brno. A student of mathematics and physics in Brno University, he died in an avalanche in the Vysoke Tatry Mountains in Slovakia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

[ 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-Jun-17 21:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin