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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0966618847472052 3.203e-08  
a 3.063035453408393 1.8523e-08 au
q 2.766956673434428 1.029e-07 au
i 3.950612523552861 4.8254e-06 deg
node 154.2386544086819 5.3118e-05 deg
peri 273.7703336045043 5.9543e-05 deg
M 256.9352724478861 2.7502e-05 deg
tp 2459561.075381413788
(2021-Dec-12.57538141)
0.0001508 TDB
period 1958.062104291903
5.36
1.7761e-05
4.863e-08
d
yr
n .1838552511745726 1.6677e-09 deg/d
Q 3.359114233382359 2.0313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1554  
   data-arc span      8933 days (24.46 yr)  
   first obs. used      1996-02-16  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54039  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:23:07  

Additional Information
 Earth MOID = 1.78459 au 
 Jupiter MOID = 1.90197 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 13.6   n/a MPO439223  
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. 2019-August); 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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