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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797457766313195 3.8687e-08  
a 2.239120560132569 5.8521e-09 au
q 1.836648096080385 8.5973e-08 au
i 4.810037426492714 3.2592e-06 deg
node 255.2836840149212 4.6664e-05 deg
peri 108.1534482053777 4.7325e-05 deg
M 183.3573861726325 8.9354e-06 deg
tp 2459600.992552087874
(2022-Jan-21.49255209)
3.1114e-05 TDB
period 1223.811820192517
3.35
4.7978e-06
1.314e-08
d
yr
n .2941628721508579 1.1532e-09 deg/d
Q 2.641593024184752 6.904e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      25111 days (68.75 yr)  
   first obs. used      1951-10-02  
   last obs. used      2020-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:55:41  

Additional Information
 Earth MOID = .841482 au 
 Jupiter MOID = 2.84133 au 
 T_jup = 3.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797911729066671 3.8747e-08  
q 1.836730777913075 8.6123e-08 au
tp 2457151.286829687451
(2015-May-08.78682969)
2.909e-05 TDB
node 255.4054312825533 4.6739e-05 deg
peri 107.6667818860528 4.7392e-05 deg
i 4.805623725889555 3.2561e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      25111 days (68.75 yr)  
   first obs. used      1951-10-02  
   last obs. used      2020-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:55:41  

Additional Information
 Jupiter MOID = 2.84133 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.501310147990635E-15 -3.331965890501876E-15 1.261134902973529E-13 -6.187773380060928E-15 3.051629939244912E-14 -3.13710726542323E-16
q -3.331965890501876E-15 7.41718489679175E-15 -2.741810354353084E-13 1.401497397611906E-14 -6.727449319227468E-14 7.276032093380313E-16
tp 1.261134902973529E-13 -2.741810354353084E-13 8.46215410104585E-10 -5.429918284446806E-13 2.448142444051015E-10 -9.57515092946035E-14
node -6.187773380060928E-15 1.401497397611906E-14 -5.429918284446806E-13 2.184537160962813E-9 -2.176667706359127E-9 -3.170911138770882E-11
peri 3.051629939244912E-14 -6.727449319227468E-14 2.448142444051015E-10 -2.176667706359127E-9 2.246011737515899E-9 3.156600055144203E-11
i -3.13710726542323E-16 7.276032093380313E-16 -9.57515092946035E-14 -3.170911138770882E-11 3.156600055144203E-11 1.060204446564504E-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 13.06   n/a E2021B10  
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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