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268390 (2005 UN129)
Classification: Main-belt Asteroid          SPK-ID: 2268390
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 .090424160201949 6.0364e-08  
a 2.638176427052371 2.1238e-08 au
q 2.399621539171582 1.539e-07 au
i 12.14454531402428 5.2567e-06 deg
node 40.05889983220189 2.0291e-05 deg
peri 40.83662228710988 3.3557e-05 deg
M 113.8309973660393 2.6297e-05 deg
tp 2458505.605963730365
(2019-Jan-22.10596373)
0.00011268 TDB
period 1565.143565281823
4.29
1.89e-05
5.175e-08
d
yr
n .2300108488355685 2.7774e-09 deg/d
Q 2.876731314933161 2.3158e-08 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6261 days (17.14 yr)  
   first obs. used      2003-04-04  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:13:16  

Additional Information
 Earth MOID = 1.42682 au 
 Jupiter MOID = 2.40181 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457623.5 (2016-Aug-23.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09065219832696707 6.0196e-08  
q 2.39913785888861 1.5344e-07 au
tp 2456942.485525731739
(2014-Oct-11.98552573)
0.0001096 TDB
node 40.06992554361582 2.029e-05 deg
peri 41.38738822641172 3.3589e-05 deg
i 12.14507579985313 5.2568e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6261 days (17.14 yr)  
   first obs. used      2003-04-04  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:13:16  

Additional Information
 Jupiter MOID = 2.40181 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.623611668768057E-15 -9.17147046448941E-15 -1.392936497501281E-12 1.978499319705251E-14 -4.846305259433444E-13 -9.060802465421527E-15
q -9.17147046448941E-15 2.354282305459828E-14 3.831834521228131E-12 -5.072766460570527E-14 1.327564898579304E-12 2.38993169944981E-14
tp -1.392936497501281E-12 3.831834521228131E-12 1.201115402087323E-8 -6.673038863065262E-12 2.932116900439773E-9 -5.331841167697843E-14
node 1.978499319705251E-14 -5.072766460570527E-14 -6.673038863065262E-12 4.116819087313465E-10 -4.044929342603926E-10 1.125211618036993E-11
peri -4.846305259433444E-13 1.327564898579304E-12 2.932116900439773E-9 -4.044929342603926E-10 1.128220713079138E-9 -1.057167978337216E-11
i -9.060802465421527E-15 2.38993169944981E-14 -5.331841167697843E-14 1.125211618036993E-11 -1.057167978337216E-11 2.763369993927777E-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 16.62   n/a E2021B55  

268390 (2005 UN129)          Discovered 2005-Oct-24 by Spacewatch at Kitt Peak
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ 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
2033-Aug-30 04:30 00:02 Hygie 0.0418017988047081 0.0417914006209984 0.0418121990417399 4.8654416273452 4.86544143737512 2463839.687675109 1.90255064327597 698.485132286861 90.1376697101055 -42.5744241451515 47338.4510277495 T 18 CATAB v2.0f-lin.ifort 2020-Nov-11 22:13:16 2020-Nov-11 22:13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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