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18853 (1999 RO92)
Classification: Main-belt Asteroid          SPK-ID: 2018853
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09670979809244985 2.9762e-08  
a 3.060446727754269 1.6234e-08 au
q 2.764471542640455 9.8718e-08 au
i 3.952726044951203 4.7202e-06 deg
node 154.2357547276964 4.2264e-05 deg
peri 274.2730429163332 4.9982e-05 deg
M 293.2314148212321 2.7588e-05 deg
tp 2459563.198146473052
(2021-Dec-14.69814647)
0.00015073 TDB
period 1955.580343371119
5.35
1.556e-05
4.26e-08
d
yr
n .1840885756600598 1.4648e-09 deg/d
Q 3.356421912868083 1.7805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1824  
   data-arc span      9104 days (24.93 yr)  
   first obs. used      1996-02-16  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:40:26  

Additional Information
 Earth MOID = 1.78163 au 
 Jupiter MOID = 1.90236 au 
 T_jup = 3.223 
[ 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 13.56   n/a E2021B10  
diameter diameter 5.292 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.599 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 0.302   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18853 (1999 RO92)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RO92 = 1996 DK4 = 1997 GB6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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