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7888 (1993 UC)
Classification: Apollo [NEO]          SPK-ID: 2007888
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 180 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6640596819886986 2.3757e-08  
a 2.435612573344855 2.2318e-09 au
q .8182204624417947 5.8395e-08 au
i 26.08469550863385 5.9373e-06 deg
node 165.9063048363729 3.3417e-06 deg
peri 323.0469118720664 6.2092e-06 deg
M 72.00480997724526 1.5918e-06 deg
tp 2459118.803922237846
(2020-Sep-26.30392224)
5.78e-06 TDB
period 1388.387637242119
3.80
1.9083e-06
5.225e-09
d
yr
n .2592935793602288 3.564e-10 deg/d
Q 4.053004684247915 3.7139e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1237  
   # delay obs. used      5  
   # Doppler obs. used      0  
   data-arc span      11461 days (31.38 yr)  
   first obs. used      1989-10-28  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:07:47  

Additional Information
 Earth MOID = .0883115 au 
 Jupiter MOID = 1.4554 au 
 T_jup = 3.055 
[ 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 15.09   n/a MPCxxxxx  
diameter diameter 2.298 km 0.733 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 2.337 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:
[Pravec, P.; Sarounova, L.; Wolf, M. (1996) Icarus 124, 471-482.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 22-36.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 335-344.]
[Monteiro, F.; Arcoverde, P.; Medeiros, H.; Rondon, E.; et al. (2018) Minor Planet Bull. 45, 221-224.]
geometric albedo albedo 0.257   0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
SMASSII spectral type spec_B U   n/a Binzel et al. (2004) Icarus 170, 259-294  

7888 (1993 UC)          Discovered 1993-Oct-20 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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