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 ]  
74328 (1998 UB44)
Classification: Main-belt Asteroid          SPK-ID: 2074328
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1935410033829316 5.1509e-08  
a 2.655557978968594 1.9123e-08 au
q 2.141598623177462 1.3449e-07 au
i 16.62026923145982 5.1079e-06 deg
node 48.69214091817871 1.7341e-05 deg
peri 311.602422762594 2.1428e-05 deg
M 279.9956098680626 1.665e-05 deg
tp 2458951.771913778225
(2020-Apr-12.27191378)
7.5539e-05 TDB
period 1580.636871946853
4.33
1.7074e-05
4.675e-08
d
yr
n .2277562964582701 2.4602e-09 deg/d
Q 3.169517334759726 2.2824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      15350 days (42.03 yr)  
   first obs. used      1976-06-04  
   last obs. used      2018-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:29:43  

Additional Information
 Earth MOID = 1.17592 au 
 Jupiter MOID = 2.37958 au 
 T_jup = 3.303 
[ 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 14.1   n/a MPO432296  
diameter diameter 7.567 km 0.529 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74328 (1998 UB44)          Discovered 1998-Oct-16 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ 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 2019-Dec-07 09:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin