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2707 Ueferji (1981 QS3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002707
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190124183387001 3.432e-08  
a 3.202729916822803 1.8846e-08 au
q 2.821565284136017 1.078e-07 au
i 2.662604609895745 3.6499e-06 deg
node 79.51961348087725 9.1212e-05 deg
peri 343.2156310032019 9.2978e-05 deg
M 257.0612696356739 1.9697e-05 deg
tp 2459799.125493882355
(2022-Aug-07.62549388)
0.000117 TDB
period 2093.528616827899
5.73
1.8479e-05
5.059e-08
d
yr
n .1719584805797733 1.5178e-09 deg/d
Q 3.583894549509588 2.1089e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      25808 days (70.66 yr)  
   first obs. used      1950-03-15  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43152  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:09:13  

Additional Information
 Earth MOID = 1.8342 au 
 Jupiter MOID = 1.7189 au 
 T_jup = 3.181 
[ 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 11.78   n/a E2021B10  
diameter diameter 25.838 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.286 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.082   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2707 Ueferji (1981 QS3)          Discovered 1981-Aug-28 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1981 QS3 = 1927 CE = 1950 EK = 1953 TY1 = 1971 YF = 1972 BS = 1973 GX = 1976 UD3 = 1977 UH = 1979 GT = 1979 HQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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