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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06451502995622198 3.496e-08  
a 2.174298771114203 5.5608e-09 au
q 2.034023820761994 7.5554e-08 au
i 4.627519296875511 3.3331e-06 deg
node 344.6528949065722 4.8532e-05 deg
peri 97.04627932761979 5.6919e-05 deg
M 136.6720208336284 2.9577e-05 deg
tp 2458555.915443418538
(2019-Mar-13.41544342)
9.5866e-05 TDB
period 1171.054904969588
3.21
4.4925e-06
1.23e-08
d
yr
n .3074151335452108 1.1793e-09 deg/d
Q 2.314573721466413 5.9196e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2543  
   data-arc span      25626 days (70.16 yr)  
   first obs. used      1950-06-25  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:56:38  

Additional Information
 Earth MOID = 1.05598 au 
 Jupiter MOID = 2.79485 au 
 T_jup = 3.679 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456934.5 (2014-Oct-04.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06405613904125658 3.487e-08  
q 2.035462273739365 7.5332e-08 au
tp 2457384.904751654100
(2015-Dec-28.40475165)
9.6025e-05 TDB
node 344.6865423148394 4.8494e-05 deg
peri 97.1223040869309 5.702e-05 deg
i 4.629524865181954 3.3334e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2543  
   data-arc span      25626 days (70.16 yr)  
   first obs. used      1950-06-25  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:56:38  

Additional Information
 Jupiter MOID = 2.79485 au 
 T_jup = 3.679 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.215925269190383E-15 -2.620633991524705E-15 -1.221716930731767E-12 -7.3821174028617E-15 -3.953721490788579E-13 -4.346471267761836E-16
q -2.620633991524705E-15 5.674964902590613E-15 2.726540411774705E-12 1.628627631281886E-14 8.773318912131878E-13 1.018333278496172E-15
tp -1.221716930731767E-12 2.726540411774705E-12 9.220824325084208E-9 1.34302561010427E-12 2.895173220172726E-9 -9.389246519881369E-13
node -7.3821174028617E-15 1.628627631281886E-14 1.34302561010427E-12 2.351626959061287E-9 -2.342931456833936E-9 4.736600686628872E-11
peri -3.953721490788579E-13 8.773318912131878E-13 2.895173220172726E-9 -2.342931456833936E-9 3.251316647677927E-9 -4.752676494838347E-11
i -4.346471267761836E-16 1.018333278496172E-15 -9.389246519881369E-13 4.736600686628872E-11 -4.752676494838347E-11 1.111152609169561E-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 13.2   n/a MPO452218  
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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