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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594663818494104 5.743e-08  
a 3.10547340918172 2.8315e-08 AU
q 2.610254800689957 1.7611e-07 AU
i 1.260546977917539 7.3022e-06 deg
node 195.8564880760684 0.00023666 deg
peri 128.6106667570926 0.00023795 deg
M 112.4910801143012 2.2389e-05 deg
tp 2456375.894598996248
(2013-Mar-24.39459900)
0.00012273 JED
period 1998.895771405825
5.47
2.7338e-05
7.485e-08
d
yr
n .1800994354732222 2.4632e-09 deg/d
Q 3.600692017673483 3.2831e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      14382 days (39.38 yr)  
   first obs. used      1975-11-07  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51649  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:50:40  

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 12.7 mag n/a MPO337297  
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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