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85242 (1993 QP4)
Classification: Main-belt Asteroid          SPK-ID: 2085242
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2306740649982033 4.6304e-08  
a 2.404369074963891 1.096e-08 au
q 1.849743486686 1.1497e-07 au
i 2.945752641851283 4.7505e-06 deg
node 134.6722106315846 7.9258e-05 deg
peri 216.3829346518184 7.9968e-05 deg
M 58.68855158416415 8.4587e-06 deg
tp 2458778.501000270714
(2019-Oct-22.00100027)
3.2101e-05 TDB
period 1361.758601043881
3.73
9.3114e-06
2.549e-08
d
yr
n .2643640361250779 1.8077e-09 deg/d
Q 2.958994663241781 1.3489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      9927 days (27.18 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51296  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:36  

Additional Information
 Earth MOID = .84486 au 
 Jupiter MOID = 2.47414 au 
 T_jup = 3.485 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457323.5 (2015-Oct-28.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2322552123389478 4.6365e-08  
q 1.845413148089667 1.1529e-07 au
tp 2457417.127698246193
(2016-Jan-29.62769825)
3.3728e-05 TDB
node 134.7457214480924 7.9292e-05 deg
peri 216.3585386243595 7.9986e-05 deg
i 2.945855944785803 4.7519e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      9927 days (27.18 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51296  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:36  

Additional Information
 Jupiter MOID = 2.47414 au 
 T_jup = 3.485 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.149678455472869E-15 -5.333463483469992E-15 -2.815681760829928E-14 2.135621003891537E-14 8.629746856765137E-16 -1.898305263473156E-15
q -5.333463483469992E-15 1.329248790206692E-14 -3.699643342810103E-14 -5.383765777993271E-14 -3.406488099724994E-14 4.903219871248863E-15
tp -2.815681760829928E-14 -3.699643342810103E-14 1.137585408912349E-9 -6.018200389617301E-12 3.687169215795356E-10 -8.552492490968429E-14
node 2.135621003891537E-14 -5.383765777993271E-14 -6.018200389617301E-12 6.287297179322835E-9 -6.279337028517091E-9 5.96977839377561E-11
peri 8.629746856765137E-16 -3.406488099724994E-14 3.687169215795356E-10 -6.279337028517091E-9 6.397758436898139E-9 -5.969677778135286E-11
i -1.898305263473156E-15 4.903219871248863E-15 -8.552492490968429E-14 5.96977839377561E-11 -5.969677778135286E-11 2.258057884769338E-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 16.0   n/a MPO493473  

85242 (1993 QP4)          Discovered 1993-Aug-18 by Elst, E. W. at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1980-Oct-27 06:01 < 00:01 Juno 0.0406022768980663 0.0405992458146452 0.0406053082147915 5.55558477291021 5.55558471897582 2444539.750697324 0.487761467142257 223.812147808155 55.9601146630525 -49.6442004274298 84514.6052704809 T 21 CATAB v2.0f-lin.ifort 2020-Nov-12 21:01:37 2020-Nov-12 21:01

Alternate Designations
 1993 QP4 = 2001 XM172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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