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765 Mattiaca (A917 SS)
Classification: Main-belt Asteroid          SPK-ID: 2000765
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .284837336342625 5.0984e-08  
a 2.545423940950289 8.5064e-09 au
q 1.820392165747261 1.3082e-07 au
i 5.533600700112076 4.3453e-06 deg
node 326.2945863914516 4.4839e-05 deg
peri 71.8947160717838 4.5814e-05 deg
M 66.80718328033171 9.7744e-06 deg
tp 2458725.229751852818
(2019-Aug-29.72975185)
4.0392e-05 TDB
period 1483.33284636714
4.06
7.4356e-06
2.036e-08
d
yr
n .2426967088888263 1.2166e-09 deg/d
Q 3.270455716153316 1.0929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2260  
   data-arc span      38967 days (106.69 yr)  
   first obs. used      1913-09-26  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:26:01  

Additional Information
 Earth MOID = .836837 au 
 Jupiter MOID = 2.20958 au 
 T_jup = 3.379 
[ 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 12.3   n/a MPO267709  
diameter diameter 7.991 km 0.962 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.4640 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2012) Minor Planet Bull. 39, 171-173.]
geometric albedo albedo 0.303   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

765 Mattiaca (A917 SS)          Discovered 1913-Sep-26 by Kaiser, F. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A917 SS = 1939 BV = 1939 CJ1 = 1939 DO = 1958 XB1 = 1968 DB1 = A913 SG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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