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4328 Valina (1982 SQ2)
Classification: Main-belt Asteroid          SPK-ID: 2004328
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736417660613243 8.6857e-09  
a 2.30353743457817 6.6631e-09 au
q 1.903547126249644 2.2399e-08 au
i 5.698559346275641 7.9547e-07 deg
node 194.2389136899122 4.3917e-06 deg
peri 130.0516823587035 7.6873e-06 deg
M 11.30883255454808 8.3819e-06 deg
tp 2459160.385017111913
(2020-Nov-06.88501711)
2.9669e-05 TDB
period 1277.001296999787
3.50
5.5407e-06
1.517e-08
d
yr
n .2819104419437877 1.2232e-09 deg/d
Q 2.703527742906696 7.8201e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2274  
   data-arc span      21648 days (59.27 yr)  
   first obs. used      1961-10-07  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45509  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:12:44  

Additional Information
 Earth MOID = .895956 au 
 Jupiter MOID = 2.63915 au 
 T_jup = 3.563 
[ show covariance matrix ]

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 14.06   n/a E2020-QM5  
diameter diameter 3.505 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.9474 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.396   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4328 Valina (1982 SQ2)          Discovered 1982-Sep-18 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1982 SQ2 = 1961 TL = 1975 SZ = 1978 NZ3 = 1982 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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