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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 172 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6641474314270904 2.3778e-08  
a 2.435467690127458 2.2155e-09 au
q .8179580794056377 5.8436e-08 au
i 26.08461202018213 5.9645e-06 deg
node 165.911343763748 3.3493e-06 deg
peri 323.0396657938019 6.2204e-06 deg
M 329.3153960716299 1.4618e-06 deg
tp 2459118.828676394956
(2020-Sep-26.32867640)
5.7851e-06 TDB
period 1388.26375603953
3.80
1.8943e-06
5.186e-09
d
yr
n .2593167173268401 3.5384e-10 deg/d
Q 4.052977300849278 3.6869e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1201  
   # delay obs. used      5  
   # Doppler obs. used      0  
   data-arc span      10996 days (30.11 yr)  
   first obs. used      1989-10-28  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-07 05:38:39  

Additional Information
 Earth MOID = .0892134 au 
 Jupiter MOID = 1.45622 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 15.1   n/a MPO267739  
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. 2019-August); 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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