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3779 Kieffer (1985 JV1)
Classification: Main-belt Asteroid          SPK-ID: 2003779
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103899288977978 3.3145e-08  
a 2.63864724665384 1.1786e-08 au
q 2.347367164709353 8.8237e-08 au
i 13.88602204904954 5.3508e-06 deg
node 59.22493222979624 1.5428e-05 deg
peri 72.18680854000563 2.9453e-05 deg
M 151.4915791733525 2.5215e-05 deg
tp 2458341.695706868812
(2018-Aug-11.19570687)
0.00010848 TDB
period 1565.562566720844
4.29
1.049e-05
2.872e-08
d
yr
n .2299492895732935 1.5407e-09 deg/d
Q 2.929927328598328 1.3088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2176  
   data-arc span      29105 days (79.69 yr)  
   first obs. used      1940-11-29  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:07:39  

Additional Information
 Earth MOID = 1.40486 au 
 Jupiter MOID = 2.25392 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457113.5 (2015-Apr-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112067370280813 3.3179e-08  
q 2.342371802862257 8.8491e-08 au
tp 2456775.063702668679
(2014-Apr-27.56370267)
0.00010503 TDB
node 59.27175652985594 1.5406e-05 deg
peri 71.26033849454625 2.9347e-05 deg
i 13.90228439093397 5.3563e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2176  
   data-arc span      29105 days (79.69 yr)  
   first obs. used      1940-11-29  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:07:39  

Additional Information
 Jupiter MOID = 2.25392 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.100819507104703E-15 -2.915426982637831E-15 -4.329297311129701E-13 -1.195611869253989E-15 -1.171769046845576E-13 1.465650343365242E-15
q -2.915426982637831E-15 7.830589074599415E-15 1.356773050109467E-12 2.268177223446087E-15 3.656153789157531E-13 -3.378507224230877E-15
tp -4.329297311129701E-13 1.356773050109467E-12 1.103215150316647E-8 -2.282608937207916E-11 2.632877246791681E-9 -5.819101061373361E-12
node -1.195611869253989E-15 2.268177223446087E-15 -2.282608937207916E-11 2.373420650003008E-10 -2.353391874194856E-10 -7.750002224932555E-12
peri -1.171769046845576E-13 3.656153789157531E-13 2.632877246791681E-9 -2.353391874194856E-10 8.612732533039796E-10 6.216846434594245E-12
i 1.465650343365242E-15 -3.378507224230877E-15 -5.819101061373361E-12 -7.750002224932555E-12 6.216846434594245E-12 2.869009630434763E-11

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 11.6   n/a MPO473818  
diameter diameter 14.660 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.848 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Tollefson, E.R.; Gross, J. (2002) Minor Planet Bull. 29, 72.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.252   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3779 Kieffer (1985 JV1)          Discovered 1985-May-13 by Shoemaker, C. and Shoemaker, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2000-Aug-21 20:01 < 00:01 Psych 0.0211742435425155 0.021173290990369 0.0211751961085189 5.85570530260186 5.85570520502068 2451778.333790162 0.442060112258554 85.7760821899564 43.9583449906971 -75.8972800537902 70432.4357389038 T 31 CATAB v2.0f-lin.ifort 2020-Aug-24 23:07:49 2020-Aug-24 23:07

Alternate Designations
 1985 JV1 = 1940 WD = 1959 GK = 1978 TH = 1987 WW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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