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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09666190003967728 3.3589e-08  
a 3.06303546477603 1.9967e-08 au
q 2.766956636861863 1.0572e-07 au
i 3.950611774957506 4.9276e-06 deg
node 154.2386374978089 5.7647e-05 deg
peri 273.7703448208388 6.3781e-05 deg
M 256.9352744333483 2.754e-05 deg
tp 2459561.075373735376
(2021-Dec-12.57537374)
0.00015092 TDB
period 1958.062115192138
5.36
1.9146e-05
5.242e-08
d
yr
n .1838552501510782 1.7977e-09 deg/d
Q 3.359114292690197 2.1897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      8871 days (24.29 yr)  
   first obs. used      1996-02-16  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54752  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:26:48  

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

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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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