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2279 Barto (1968 DL)
Classification: Main-belt Asteroid          SPK-ID: 2002279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1574980756559186 2.91e-08  
a 2.45816839741687 8.2431e-09 au
q 2.07101160518552 7.1253e-08 au
i 2.984603379261505 4.3394e-06 deg
node 139.9138087415073 5.6447e-05 deg
peri 61.95842662662642 5.8183e-05 deg
M 175.5504839510106 1.4492e-05 deg
tp 2458314.039734939495
(2018-Jul-14.53973494)
5.6029e-05 TDB
period 1407.718679321586
3.85
7.0808e-06
1.939e-08
d
yr
n .2557329140318666 1.2863e-09 deg/d
Q 2.845325189648221 9.5413e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      24072 days (65.91 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:48:19  

Additional Information
 Earth MOID = 1.0701 au 
 Jupiter MOID = 2.11299 au 
 T_jup = 3.472 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456850.5 (2014-Jul-12.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567367529048808 2.9161e-08  
q 2.07328380430232 7.137e-08 au
tp 2456905.516126349373
(2014-Sep-05.01612635)
5.5667e-05 TDB
node 139.9501958309271 5.6464e-05 deg
peri 61.97426985203258 5.821e-05 deg
i 2.983738916411524 4.3383e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      24072 days (65.91 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:48:19  

Additional Information
 Jupiter MOID = 2.11299 au 
 T_jup = 3.472 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.50351387078504E-16 -2.071285219671065E-15 -5.201645194263274E-13 1.932112056193603E-16 -1.449212140578634E-13 3.842179021916241E-16
q -2.071285219671065E-15 5.093637679399632E-15 1.288225548001108E-12 -9.489840130848563E-16 3.57666868068847E-13 -9.248641519850391E-16
tp -5.201645194263274E-13 1.288225548001108E-12 3.098840527902657E-9 -1.099851425751448E-11 7.940594852753331E-10 -2.762590733390672E-13
node 1.932112056193603E-16 -9.489840130848563E-16 -1.099851425751448E-11 3.188230143541008E-9 -3.186124246140581E-9 -7.693956668864E-12
peri -1.449212140578634E-13 3.57666868068847E-13 7.940594852753331E-10 -3.186124246140581E-9 3.388450469813206E-9 7.60132671337831E-12
i 3.842179021916241E-16 -9.248641519850391E-16 -2.762590733390672E-13 -7.693956668864E-12 7.60132671337831E-12 1.882088910918574E-11

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 13.1   n/a MPO492777 IRAS observations used: 5
diameter diameter 14.408 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.63 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R. (2019) Minor Planet Bull. 46, 127-129.]
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.618   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.14 deg.
U-B UB 0.218   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.14 deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices

2279 Barto (1968 DL)          Discovered 1968-Feb-25 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1968 DL = 1949 KA1 = 1969 QS = 1976 JJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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