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 ]  
20517 Judycrystal (1999 RB35)
Classification: Main-belt Asteroid          SPK-ID: 2020517
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0395381840822254 5.0425e-08  
a 2.650981931949334 1.7323e-08 au
q 2.546166920325267 1.3427e-07 au
i 21.31351694831648 7.9531e-06 deg
node 291.0353450487594 1.9376e-05 deg
peri 135.7497812003674 0.00012786 deg
M 223.9225156929616 0.00012555 deg
tp 2459596.426021418430
(2022-Jan-16.92602142)
0.00055118 TDB
period 1576.553011713329
4.32
1.5453e-05
4.231e-08
d
yr
n .2283462702017026 2.2382e-09 deg/d
Q 2.7557969435734 1.8008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      15684 days (42.94 yr)  
   first obs. used      1976-05-29  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59262  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:58  

Additional Information
 Earth MOID = 1.58246 au 
 Jupiter MOID = 2.42125 au 
 T_jup = 3.292 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456040.5 (2012-Apr-23.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04060558703337817 5.1496e-08  
q 2.540594417094651 1.3722e-07 au
tp 2456455.627163340367
(2013-Jun-12.12716334)
0.00052276 TDB
node 291.0890112890254 1.9405e-05 deg
peri 137.9699242099557 0.00012301 deg
i 21.30093105370139 7.9421e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      15684 days (42.94 yr)  
   first obs. used      1976-05-29  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59262  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:58  

Additional Information
 Jupiter MOID = 2.42125 au 
 T_jup = 3.292 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.651866830543729E-15 -7.016003885277496E-15 4.929391452434151E-12 -6.02810817425577E-15 1.1933669459434E-12 7.189487783142602E-18
q -7.016003885277496E-15 1.882920517611275E-14 -1.183831905372131E-11 1.801126631733508E-14 -2.896996392313455E-12 1.432268729277259E-15
tp 4.929391452434151E-12 -1.183831905372131E-11 2.73273330663241E-7 -3.259619351019489E-10 6.35534978444616E-8 5.811967776927201E-12
node -6.02810817425577E-15 1.801126631733508E-14 -3.259619351019489E-10 3.765596187993299E-10 -4.263763163823399E-10 6.37543245450919E-11
peri 1.1933669459434E-12 -2.896996392313455E-12 6.35534978444616E-8 -4.263763163823399E-10 1.51325939246413E-8 -5.846787986314629E-11
i 7.189487783142602E-18 1.432268729277259E-15 5.811967776927201E-12 6.37543245450919E-11 -5.846787986314629E-11 6.307650733997084E-11

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 14.3   n/a MPO384930  
diameter diameter 3.708 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.294   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20517 Judycrystal           Discovered 1999 Sept. 11 by L. Robinson at Sunflower Observatory.
Judy Crystal (Andrews) Robinson (b. 1949) is the wife of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ 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 2020-Apr-05 04:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin