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181850 (1998 UA47)
Classification: Main-belt Asteroid          SPK-ID: 2181850
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013680956951412 4.2134e-08  
a 2.421782129476858 1.3582e-08 au
q 2.176290686823265 9.7663e-08 au
i 5.594568241877378 3.7015e-06 deg
node 233.633862156366 4.9879e-05 deg
peri 30.54953283066601 5.5332e-05 deg
M 78.58439068731496 2.3305e-05 deg
tp 2458900.006680343473
(2020-Feb-20.50668034)
8.9372e-05 TDB
period 1376.578658054183
3.77
1.1581e-05
3.171e-08
d
yr
n .2615179291743968 2.2e-09 deg/d
Q 2.667273572130451 1.4959e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      8031 days (21.99 yr)  
   first obs. used      1998-10-24  
   last obs. used      2020-10-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:18  

Additional Information
 Earth MOID = 1.1612 au 
 Jupiter MOID = 2.38282 au 
 T_jup = 3.500 
[ show covariance matrix ]

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 16.55   n/a E2021B55  

181850 (1998 UA47)          Discovered 1998-Oct-24 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ 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
2015-Apr-09 10:57 < 00:01 Juno 0.0413232658024293 0.0413212086418586 0.041325322997333 7.71556135494948 7.71556131679164 2457121.955919505 0.351457366302953 143.297545578404 82.5523114374013 58.698628090354 67777.495421119 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:19 2021-Apr-13 21:32
2035-Sep-03 20:19 < 00:01 Iris 0.0371754248828102 0.0371735655029677 0.0371772844462935 6.13912374698311 6.13912372179412 2464574.346785492 0.53150776649975 389.569414190221 87.0363760614151 -85.1773161614813 63666.4173891241 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:19 2021-Apr-13 21:32
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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