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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6730255155680391 0.013137  
a 2.187712559040577 0.076718 AU
q .7153261860776184 0.003656 AU
i 1.937552514890907 0.030974 deg
node 118.8801070985816 0.0036811 deg
peri 70.68682053399623 0.077765 deg
M 346.8238256751138 0.77975 deg
tp 2448317.758419520605
(1991-Mar-02.25841952)
0.28452 JED
period 1181.908393394931
3.24
62.17
0.1702
d
yr
n .3045921342227977 0.016022 deg/d
Q 3.660098932003536 0.12835 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      .25542  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 09:46:27  

Additional Information
 Earth MOID = .000342446 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 0.00112415781240469 0.0010666832805743 0.00118275512104396 17.8839137393348 17.7508864500618 2448275.221281213 0.248946955330304 3166.08963175356 7.98993078531253 -2.334382421061 44.4467532887742 T 10 CATAB v2.0c-linF95 2013-Aug-05 09:46:30 2013-Aug-05 09:46
1991-Jan-18 21:40 00:05 Moon 0.00283099530828892 0.00277756358861552 0.00288492103891451 18.519364792225 18.5187396758651 2448275.402543503 4.57030076433138 2874.88328216619 15.1696338887675 -15.1614971057586 7129.45112252799 T 10 CATAB v2.0c-linF95 2013-Aug-05 09:46:30 2013-Aug-05 09:46
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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