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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797457765745174 3.8687e-08  
a 2.239120560079 5.8526e-09 au
q 1.836648096163632 8.5973e-08 au
i 4.810037418332752 3.26e-06 deg
node 255.2836839626238 4.6667e-05 deg
peri 108.1534484493656 4.7328e-05 deg
M 183.3573860479682 8.9364e-06 deg
tp 2459600.992552490118
(2022-Jan-21.49255249)
3.1117e-05 TDB
period 1223.811820148599
3.35
4.7982e-06
1.314e-08
d
yr
n .2941628721614142 1.1533e-09 deg/d
Q 2.641593023994368 6.9046e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2598  
   data-arc span      25095 days (68.71 yr)  
   first obs. used      1951-10-02  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:03:38  

Additional Information
 Earth MOID = .841482 au 
 Jupiter MOID = 2.84133 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 12.9   n/a MPO452220  
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. 2019-August); 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 ]
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