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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
27085 (1998 UA1)
Classification: Main-belt Asteroid          SPK-ID: 2027085
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731113250527527 3.3526e-08  
a 2.308905369970984 5.9377e-09 au
q 1.90920770195389 7.8178e-08 au
i 4.86181770865361 4.1702e-06 deg
node 49.58342881048499 4.7894e-05 deg
peri 15.25897878579492 4.9839e-05 deg
M 281.8015806727564 1.3085e-05 deg
tp 2458878.857611506019
(2020-Jan-30.35761151)
4.6717e-05 TDB
period 1281.46759236673
3.51
4.9433e-06
1.353e-08
d
yr
n .280927900279647 1.0837e-09 deg/d
Q 2.708603037988077 6.9656e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1271  
   data-arc span      14380 days (39.37 yr)  
   first obs. used      1980-07-12  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52721  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:00:12  

Additional Information
 Earth MOID = .922753 au 
 Jupiter MOID = 2.60089 au 
 T_jup = 3.561 
[ 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 15.0   n/a MPO416979  
diameter diameter 3.551 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.128   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27085 (1998 UA1)          Discovered 1998-Oct-19 by Stafford, T. at Zeno
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-10 22:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin