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 ]  
146635 (2001 UM44)
Classification: Main-belt Asteroid          SPK-ID: 2146635
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05145426644840069 3.7251e-08  
a 2.780376135542834 1.8642e-08 au
q 2.637313921037838 1.0861e-07 au
i 6.108211412821833 4.6234e-06 deg
node 42.70606482642051 4.3292e-05 deg
peri 40.73321627250431 6.8909e-05 deg
M 322.4151134343399 5.3035e-05 deg
tp 2459177.292769133046
(2020-Nov-23.79276913)
0.00024978 TDB
period 1693.377383930884
4.64
1.703e-05
4.663e-08
d
yr
n .2125928947771359 2.1381e-09 deg/d
Q 2.92343835004783 1.9601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      9426 days (25.81 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:38:31  

Additional Information
 Earth MOID = 1.65636 au 
 Jupiter MOID = 2.20126 au 
 T_jup = 3.323 
[ 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 15.4   n/a MPO453932  
diameter diameter 4.523 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146635 (2001 UM44)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 UM44 = 2003 BH88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 11:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin