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5228 Maca (1986 VT)
Classification: Main-belt Asteroid          SPK-ID: 2005228
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159466369286618 5.785e-08  
a 3.105473415705369 2.85e-08 AU
q 2.610254845186722 1.7776e-07 AU
i 1.260545960764906 7.4261e-06 deg
node 195.8564906773236 0.00023742 deg
peri 128.6106599165533 0.00023874 deg
M 112.4910819076438 2.2544e-05 deg
tp 2456375.894587070577
(2013-Mar-24.39458707)
0.00012367 JED
period 1998.895777704427
5.47
2.7517e-05
7.534e-08
d
yr
n .1800994349057215 2.4792e-09 deg/d
Q 3.600691986224017 3.3044e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      14299 days (39.15 yr)  
   first obs. used      1975-11-07  
   last obs. used      2014-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52586  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:11:11  

Additional Information
 Earth MOID = 1.59918 AU 
 T_jup = 3.200 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO267728  
diameter diameter 34.33 km 4.4 IRAS-A-FPA-3-RDR-IMPS-V5.0 IRAS observations used: 2
geometric albedo albedo 0.0413   0.013 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 1: at least two valid IRAS band observations used

5228 Maca (1986 VT)          Discovered 1986-Nov-03 by Vavrova, Z. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1986 VT = 1975 VY2 = 1989 EE2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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