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136729 (1995 UR57)
Classification: Main-belt Asteroid          SPK-ID: 2136729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1747785520409242 6.6889e-08  
a 3.009260386544748 1.9195e-08 au
q 2.483306213470345 1.9915e-07 au
i 4.703148892669623 7.1176e-06 deg
node 203.339267882347 4.9669e-05 deg
peri 188.4114374800083 5.1385e-05 deg
M 249.3090518127266 1.2099e-05 deg
tp 2459586.770019641185
(2022-Jan-07.27001964)
6.6439e-05 TDB
period 1906.725080299682
5.22
1.8243e-05
4.995e-08
d
yr
n .1888054044704853 1.8065e-09 deg/d
Q 3.535214559619151 2.255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      10388 days (28.44 yr)  
   first obs. used      1990-11-15  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53267  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:29:10  

Additional Information
 Earth MOID = 1.4892 au 
 Jupiter MOID = 1.90383 au 
 T_jup = 3.222 
[ 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 16.0   n/a MPO469438  
rotation period rot_per 1.33 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

136729 (1995 UR57)          Discovered 1995-Oct-17 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1995 UR57 = 2000 RQ89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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