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3851 Alhambra (1986 UZ)
Classification: Main-belt Asteroid          SPK-ID: 2003851
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 .06419436449133571 1.6785e-08  
a 2.174920908018758 5.2318e-09 au
q 2.035303242509575 3.6191e-08 au
i 4.627565387315352 3.1258e-07 deg
node 344.6430088305331 4.404e-06 deg
peri 97.07196324401168 1.1227e-05 deg
M 198.1303567786541 9.6524e-06 deg
tp 2459727.276676543209
(2022-May-27.77667654)
3.1646e-05 TDB
period 1171.557555706946
3.21
4.2273e-06
1.157e-08
d
yr
n .3072832386649305 1.1088e-09 deg/d
Q 2.31453857352794 5.5677e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2587  
   data-arc span      25626 days (70.16 yr)  
   first obs. used      1950-06-25  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41663  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:38:30  

Additional Information
 Earth MOID = 1.05687 au 
 Jupiter MOID = 2.7936 au 
 T_jup = 3.679 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456971.5 (2014-Nov-10.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06404313237708992 1.6801e-08  
q 2.035496079870172 3.6255e-08 au
tp 2457384.935974055046
(2015-Dec-28.43597405)
3.1669e-05 TDB
node 344.6862445304795 4.4015e-06 deg
peri 97.12988536669818 1.125e-05 deg
i 4.629553481946552 3.1266e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2587  
   data-arc span      25626 days (70.16 yr)  
   first obs. used      1950-06-25  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41663  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:38:30  

Additional Information
 Jupiter MOID = 2.7936 au 
 T_jup = 3.679 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.822577555291763E-16 -6.034952281973222E-16 1.208739419342592E-13 -8.34059457431932E-15 5.486382604919052E-14 -4.448452063945542E-16
q -6.034952281973222E-16 1.314450448396354E-15 -2.830301352618538E-13 1.752047281224631E-14 -1.259244931676456E-13 9.939847141850518E-16
tp 1.208739419342592E-13 -2.830301352618538E-13 1.00291702449602E-9 1.653207551598226E-11 3.288849123320886E-10 1.868505858491269E-13
node -8.34059457431932E-15 1.752047281224631E-14 1.653207551598226E-11 1.937363097243799E-11 -1.320426770228463E-11 -6.577566466316873E-13
peri 5.486382604919052E-14 -1.259244931676456E-13 3.288849123320886E-10 -1.320426770228463E-11 1.265548165368385E-10 6.865225063698084E-13
i -4.448452063945542E-16 9.939847141850518E-16 1.868505858491269E-13 -6.577566466316873E-13 6.865225063698084E-13 9.775392932107427E-14

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 13.25   n/a MPCxxxxx  
diameter diameter 6.504 km 0.390 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 53. 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:
[Higgins, D.; Oey, J. (2007) Minor Planet Bull. 34, 79-80.]
geometric albedo albedo 0.218   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3851 Alhambra (1986 UZ)          Discovered 1986-Oct-30 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1986 UZ = 1950 MC = 1960 RA = 1965 CD = 1973 SE4 = 1973 ST2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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