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134540 (1999 RZ91)
Classification: Main-belt Asteroid          SPK-ID: 2134540
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2800555327006353 3.1823e-08  
a 2.364223798316452 9.5762e-09 au
q 1.702109843055419 7.7882e-08 au
i .7292196127190915 4.9837e-06 deg
node 302.3954335838388 0.00030899 deg
peri 99.57854091568213 0.0003092 deg
M 281.9751614836714 1.2391e-05 deg
tp 2459488.280711212358
(2021-Sep-30.78071121)
4.7043e-05 TDB
period 1327.795840484412
3.64
8.0673e-06
2.209e-08
d
yr
n .2711260187926657 1.6473e-09 deg/d
Q 3.026337753577486 1.2258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54733  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:08:23  

Additional Information
 Earth MOID = .709889 au 
 Jupiter MOID = 2.3936 au 
 T_jup = 3.495 
[ 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 16.51   n/a E2021B55  
diameter diameter 1.259 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.899 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.307   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134540 (1999 RZ91)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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