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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1799254459171317 3.5544e-08  
a 2.239424253764454 5.5346e-09 au
q 1.836494846308245 7.9533e-08 au
i 4.809564681923057 3.2121e-06 deg
node 255.27940718 4.4297e-05 deg
peri 108.0800997747791 4.5006e-05 deg
M 299.9449536086248 8.8347e-06 deg
tp 2459600.697301767455
(2022-Jan-21.19730177)
3.0264e-05 TDB
period 1224.060808432597
3.35
4.5378e-06
1.242e-08
d
yr
n .2941030359929404 1.0903e-09 deg/d
Q 2.642353661220664 6.5304e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2758  
   data-arc span      25512 days (69.85 yr)  
   first obs. used      1951-10-02  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42445  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:05:52  

Additional Information
 Earth MOID = .8405 au 
 Jupiter MOID = 2.84185 au 
 T_jup = 3.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457262.5 (2015-Aug-28.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797714227356177 3.5582e-08  
q 1.83672702558842 7.954e-08 au
tp 2457151.277444015603
(2015-May-08.77744402)
2.8739e-05 TDB
node 255.40453351728 4.436e-05 deg
peri 107.6639088209792 4.5062e-05 deg
i 4.805697076563352 3.2095e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2758  
   data-arc span      25512 days (69.85 yr)  
   first obs. used      1951-10-02  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42445  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:05:52  

Additional Information
 Jupiter MOID = 2.84185 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.266112809146019E-15 -2.825551355571678E-15 6.99208871574917E-14 -5.030050096704718E-15 2.260327915559855E-14 -2.613979390061437E-16
q -2.825551355571678E-15 6.326676841278136E-15 -1.540363436052669E-13 1.138456842186962E-14 -5.028230866074993E-14 6.232240674516819E-16
tp 6.99208871574917E-14 -1.540363436052669E-13 8.259223104967899E-10 -1.040350136639508E-12 2.421693463173186E-10 -3.125479683775411E-14
node -5.030050096704718E-15 1.138456842186962E-14 -1.040350136639508E-12 1.967793096103589E-9 -1.960864839891557E-9 -2.454028199477061E-11
peri 2.260327915559855E-14 -5.028230866074993E-14 2.421693463173186E-10 -1.960864839891557E-9 2.030613270882132E-9 2.443849593856363E-11
i -2.613979390061437E-16 6.232240674516819E-16 -3.125479683775411E-14 -2.454028199477061E-11 2.443849593856363E-11 1.030100082164017E-11

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 ]
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