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 ]  
3956 Caspar (1988 VL1)
Classification: Main-belt Asteroid          SPK-ID: 2003956
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1799254482565989 3.6607e-08  
a 2.239424253962927 5.6092e-09 au
q 1.836494841231948 8.174e-08 au
i 4.809564629516728 3.2355e-06 deg
node 255.2794081848106 4.5007e-05 deg
peri 108.0800988744916 4.5697e-05 deg
M 299.9449533095176 8.9082e-06 deg
tp 2459600.697302811616
(2022-Jan-21.19730281)
3.0528e-05 TDB
period 1224.060808595324
3.35
4.5989e-06
1.259e-08
d
yr
n .2941030359538424 1.105e-09 deg/d
Q 2.642353666693906 6.6184e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2721  
   data-arc span      25473 days (69.74 yr)  
   first obs. used      1951-10-02  
   last obs. used      2021-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42719  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:51:07  

Additional Information
 Earth MOID = .8405 au 
 Jupiter MOID = 2.84185 au 
 T_jup = 3.610 
[ 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 13.05   n/a MPO614063  
diameter diameter 5.439 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.77120 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Chirony, V.; Galad, A.; Pravec, P. Kusnirak, P.; et al. (2011) Planet. Space Sci. 59, 1482-1489.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Mas, V.; Fornas, G.; Lozano, J.; Rodrigo, O.; et al. (2018) Minor Planet Bull. 45, 76-82.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2018) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.313   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3956 Caspar (1988 VL1)          Discovered 1988-Nov-03 by Jensen, P. at Brorfelde
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 VL1 = 1951 TD = 1971 QM1 = 1978 WS3 = 1981 RA4 = 1981 SM3 = 1986 AZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-02 09:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin