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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
91957 (1999 VO78)
Classification: Main-belt Asteroid          SPK-ID: 2091957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111640040171175 4.9715e-08  
a 3.163172594337104 2.3298e-08 au
q 2.81003587883695 1.577e-07 au
i 4.510046987680662 5.7717e-06 deg
node 335.3562866882481 6.0155e-05 deg
peri 166.6482676770443 6.4686e-05 deg
M 210.2093900193591 2.4569e-05 deg
tp 2460251.497508792674
(2023-Nov-02.99750879)
0.00014308 TDB
period 2054.862472388243
5.63
2.2703e-05
6.216e-08
d
yr
n .1751942063458844 1.9356e-09 deg/d
Q 3.516309309837259 2.5899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      7961 days (21.80 yr)  
   first obs. used      1999-10-21  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54741  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:03:04  

Additional Information
 Earth MOID = 1.82363 au 
 Jupiter MOID = 1.49804 au 
 T_jup = 3.190 
[ 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 14.66   n/a E2021B10  
diameter diameter 6.861 km 0.302 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91957 (1999 VO78)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 VO78 = 2001 BR8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 03:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin