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18717 (1998 HZ127)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018717
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140708013381044 3.5574e-08  
a 3.205580691188337 1.9481e-08 au
q 2.839917532990528 1.169e-07 au
i .9668194236260707 4.8932e-06 deg
node 198.9978257228932 0.00023012 deg
peri 62.97147230363492 0.00023137 deg
M 291.6375441001357 2.6468e-05 deg
tp 2459598.583019188903
(2022-Jan-19.08301919)
0.00015519 TDB
period 2096.324437464942
5.74
1.911e-05
5.232e-08
d
yr
n .1717291434313209 1.5655e-09 deg/d
Q 3.571243849386145 2.1703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      22095 days (60.49 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:46:25  

Additional Information
 Earth MOID = 1.82283 au 
 Jupiter MOID = 1.48933 au 
 T_jup = 3.183 
[ 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 14.44   n/a MPCxxxxx  
diameter diameter 6.828 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18717 (1998 HZ127)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HZ127 = 1988 RJ10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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