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2558 Viv (1981 SP1)
Classification: Main-belt Asteroid          SPK-ID: 2002558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .156074265622882 3.0704e-08  
a 2.215852073510241 6.1604e-09 au
q 1.87001458840819 7.0694e-08 au
i 5.151944494698735 3.4419e-06 deg
node 46.12606313655422 3.2519e-05 deg
peri 282.4080203384158 3.4373e-05 deg
M 292.3031600257763 1.1323e-05 deg
tp 2459227.055948295607
(2021-Jan-12.55594830)
3.8061e-05 TDB
period 1204.785059649363
3.30
5.0242e-06
1.376e-08
d
yr
n .2988084863077346 1.2461e-09 deg/d
Q 2.561689558612292 7.1219e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      38276 days (104.79 yr)  
   first obs. used      1915-10-15  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:53:25  

Additional Information
 Earth MOID = .867287 au 
 Jupiter MOID = 2.77263 au 
 T_jup = 3.632 
[ 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 13.7   n/a MPO473800  
diameter diameter 5.026 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.784 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Black, S.; Masner, Z.; Osborne, J.; Trent, L. (2018) Minor Planet Bull. 45, 338-340.]
geometric albedo albedo 0.273   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2558 Viv (1981 SP1)          Discovered 1981-Sep-26 by Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 SP1 = 1968 UR1 = 1971 QH1 = 1977 JH = 1978 VS7 = 1981 TN4 = A915 TC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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