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85548 (1997 XX13)
Classification: Main-belt Asteroid          SPK-ID: 2085548
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446461821865804 3.3314e-08  
a 2.324308528651702 9.1844e-09 au
q 1.755675320893355 7.6977e-08 au
i 7.345833240294469 4.0809e-06 deg
node 88.40885950095013 3.7415e-05 deg
peri 329.864603198197 3.915e-05 deg
M 123.3308540440571 1.2001e-05 deg
tp 2458557.087094880800
(2019-Mar-14.58709488)
4.1836e-05 TDB
period 1294.312336358981
3.54
7.6716e-06
2.1e-08
d
yr
n .2781399743223593 1.6486e-09 deg/d
Q 2.892941736410048 1.1431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      10672 days (29.22 yr)  
   first obs. used      1991-02-09  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

Additional Information
 Earth MOID = .772788 au 
 Jupiter MOID = 2.45992 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457083.5 (2015-Mar-02.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2431884120595519 3.3197e-08  
q 1.759936485645091 7.6612e-08 au
tp 2457261.702125972898
(2015-Aug-27.20212597)
3.9392e-05 TDB
node 88.49680513825771 3.7443e-05 deg
peri 329.7510169539896 3.9214e-05 deg
i 7.341345337731222 4.0788e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      10672 days (29.22 yr)  
   first obs. used      1991-02-09  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

Additional Information
 Jupiter MOID = 2.45992 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.10201520660154E-15 -2.532866385154866E-15 -6.317540105284627E-14 7.925071421630855E-15 -7.103123562598964E-14 -2.907634390387567E-16
q -2.532866385154866E-15 5.869445539684466E-15 2.319152891250121E-13 -1.895984516192551E-14 1.868107799783159E-13 6.963499136698671E-16
tp -6.317540105284627E-14 2.319152891250121E-13 1.55173431119214E-9 7.076538481758299E-12 4.774621674512758E-10 9.882981757199911E-13
node 7.925071421630855E-15 -1.895984516192551E-14 7.076538481758299E-12 1.401978589351677E-9 -1.38815744748927E-9 3.016551812172943E-11
peri -7.103123562598964E-14 1.868107799783159E-13 4.774621674512758E-10 -1.38815744748927E-9 1.537724394689898E-9 -2.962677512532737E-11
i -2.907634390387567E-16 6.963499136698671E-16 9.882981757199911E-13 3.016551812172943E-11 -2.962677512532737E-11 1.663667054071762E-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 15.8   n/a MPO359339  

85548 (1997 XX13)          Discovered 1997-Dec-04 by Uppsala-DLR Trojan Survey at La Silla
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
1969-Feb-12 15:58 < 00:01 Hebe 0.0365885755362004 0.0365871173157345 0.0365900353179303 5.42643888201773 5.42643885070672 2440265.165217047 0.546808272020957 468.382781141304 42.2179673532542 -82.7049250735174 128563.373983159 T 18 CATAB v2.0f-lin.ifort 2020-May-20 15:37:58 2020-May-20 15:38
2184-Aug-05 23:16 00:04 Hygie 0.0328723112964565 0.0328467544781163 0.0328978709729834 5.67957738493564 5.67957717799005 2518967.469787446 3.90141052827528 1362.19342713525 62.2443794204698 -20.8204172603845 28255.4998705955 T 18 CATAB v2.0f-lin.ifort 2020-May-20 15:37:58 2020-May-20 15:38
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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