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(1991 BA)
Classification: Apollo [NEO]          SPK-ID: 3092104
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2448274.5 (1991-Jan-18.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6730255157297486 0.04379  
a 2.187712559985852 0.25573 au
q .7153261860329255 0.012187 au
i 1.937552515200838 0.10325 deg
node 118.8801070986714 0.01227 deg
peri 70.68682053485537 0.25922 deg
M 346.8238256847239 2.5992 deg
tp 2448317.758419517091
(1991-Mar-02.25841952)
0.94841 JED
period 1181.908394160956
3.24
207.23
0.5674
d
yr
n .3045921340253838 0.053407 deg/d
Q 3.660098933938779 0.42784 au
  Orbit Determination Parameters
   # obs. used (total)      7  
   first obs. used      1991-01-18  
   last obs. used      1991-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      9  
   fit RMS      .076625  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-01 10:37:18  

Additional Information
 Earth MOID = .000342446 au 
 Jupiter MOID = 1.30068 au 
 T_jup = 3.337 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.6 mag n/a MPO242993  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1991-Jan-18 17:19 < 00:01 Earth 0.00112415781264142 0.000939942078912692 0.00132239423058705 17.8839137433964 17.7508864541819 2448275.221281165 0.829823217337594 10553.6319476605 26.6331024357934 -2.33438216489167 13.3340260592657 T 11 CATAB v2.0c-linF95 2016-Feb-01 10:37:23 2016-Feb-01 10:37
1991-Jan-18 21:40 00:15 Moon 0.00283099530850965 0.00265596226594142 0.00301210248758573 18.5193648061297 18.5187396897703 2448275.402543423 15.2343356237896 9582.94404664524 50.5654425824531 -15.1614963996962 2138.83539519238 T 11 CATAB v2.0c-linF95 2016-Feb-01 10:37:23 2016-Feb-01 10:37
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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