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 ]  
9868 (1991 VP1)
Classification: Main-belt Asteroid          SPK-ID: 2009868
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294428377298689 3.8004e-08  
a 2.255293736427177 7.287e-09 au
q 1.963362115269644 8.8031e-08 au
i 4.923694579550362 4.0979e-06 deg
node 122.984423639339 4.5857e-05 deg
peri 317.3462284718999 4.8848e-05 deg
M 8.750164200043224 1.6133e-05 deg
tp 2458570.431151319330
(2019-Mar-27.93115132)
5.5418e-05 TDB
period 1237.09513073913
3.39
5.9957e-06
1.642e-08
d
yr
n .2910042979353658 1.4104e-09 deg/d
Q 2.54722535758471 8.2302e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1577  
   data-arc span      11278 days (30.88 yr)  
   first obs. used      1989-01-08  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49849  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:14:38  

Additional Information
 Earth MOID = .982406 au 
 Jupiter MOID = 2.65529 au 
 T_jup = 3.608 
[ 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 14.5   n/a MPO458925  
diameter diameter 3.463 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9868 (1991 VP1)          Discovered 1991-Nov-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19990106/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 VP1 = 1994 PQ27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-24 14:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin