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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731113242607246 3.3421e-08  
a 2.308905369618658 5.8381e-09 au
q 1.909207703491274 7.8003e-08 au
i 4.861817741528652 4.1696e-06 deg
node 49.58342561435887 4.6222e-05 deg
peri 15.25898149293253 4.8236e-05 deg
M 281.8015813649835 1.2904e-05 deg
tp 2458878.857608978231
(2020-Jan-30.35760898)		 4.6041e-05 TDB
period 1281.467592073413
3.51		 4.8603e-06
1.331e-08		 d
yr
n .280927900343949 1.0655e-09 deg/d
Q 2.708603035746042 6.8488e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1299  
   data-arc span      14384 days (39.38 yr)  
   first obs. used      1980-07-12  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:34:23  

Additional Information
 Earth MOID = .922753 au 
 Jupiter MOID = 2.60089 au 
 T_jup = 3.561 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456615.5 (2013-Nov-19.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1728869121165075 3.3428e-08  
q 1.90976612457317 7.8033e-08 au
tp 2456313.220064952770
(2013-Jan-20.72006495)		 4.6062e-05 TDB
node 49.60814793338697 4.6207e-05 deg
peri 14.79263750961394 4.8243e-05 deg
i 4.863648508291628 4.1714e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1299  
   data-arc span      14384 days (39.38 yr)  
   first obs. used      1980-07-12  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:34:23  

Additional Information
 Jupiter MOID = 2.60089 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.117430865774473E-15 -2.603634774278681E-15 -5.05658427552647E-13 -1.469219928841317E-14 -1.359857547802151E-13 -4.782159532626018E-17
q -2.603634774278681E-15 6.089207202029189E-15 1.151054536386042E-12 3.414171976365663E-14 3.107442249702422E-13 2.025342298007183E-16
tp -5.05658427552647E-13 1.151054536386042E-12 2.121691313865374E-9 1.915895087819536E-11 6.519558588990689E-10 -1.392615240008704E-12
node -1.469219928841317E-14 3.414171976365663E-14 1.915895087819536E-11 2.135108263340858E-9 -2.121042686199002E-9 -6.167931198285657E-11
peri -1.359857547802151E-13 3.107442249702422E-13 6.519558588990689E-10 -2.121042686199002E-9 2.327422637112201E-9 6.103258354686726E-11
i -4.782159532626018E-17 2.025342298007183E-16 -1.392615240008704E-12 -6.167931198285657E-11 6.103258354686726E-11 1.740029573660066E-11

[ 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 2020-Jan-29 17:48 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin