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 ]  
20834 Allihewlett (2000 UM48)
Classification: Main-belt Asteroid          SPK-ID: 2020834
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1706331450840562 3.4921e-08  
a 2.28477619906274 7.7237e-09 au
q 1.894917650403469 7.7789e-08 au
i 5.776454589845599 4.0042e-06 deg
node 58.0041862243307 3.9687e-05 deg
peri 78.07457790628374 4.2211e-05 deg
M 231.0891917895031 1.585e-05 deg
tp 2459652.200692449867
(2022-Mar-13.70069245)
5.6789e-05 TDB
period 1261.432237833964
3.45
6.3964e-06
1.751e-08
d
yr
n .2853898839767762 1.4471e-09 deg/d
Q 2.674634747722011 9.0416e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1600  
   data-arc span      13529 days (37.04 yr)  
   first obs. used      1984-01-05  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:32:35  

Additional Information
 Earth MOID = .918723 au 
 Jupiter MOID = 2.37382 au 
 T_jup = 3.577 
[ 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 14.63   n/a E2021B10  
diameter diameter 2.755 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.414   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

20834 Allihewlett           Discovered 2000 Oct. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Allison Hewlett (b. 1986) was awarded first place and Best in Category in the 2004 Intel International Science and Engineering Fair for her gerontology project. She attends the Christian Academy of Louisville, Louisville, Kentucky, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

Alternate Designations
 2000 UM48 = 1984 AY = 1998 FV80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 15:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin