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120842 (1998 KD55)
Classification: Main-belt Asteroid          SPK-ID: 2120842
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 .2321194172123574 4.2498e-08  
a 2.55524538481214 1.1309e-08 au
q 1.96212331525498 1.116e-07 au
i 5.59447123143057 4.6725e-06 deg
node 140.8102522618688 4.8991e-05 deg
peri 97.00256777511939 5.1407e-05 deg
M 194.4276613362337 1.833e-05 deg
tp 2459886.671424626347
(2022-Nov-03.17142463)
7.9544e-05 TDB
period 1491.926217018175
4.08
9.9048e-06
2.712e-08
d
yr
n .2412987960755263 1.602e-09 deg/d
Q 3.148367454369299 1.3935e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      8273 days (22.65 yr)  
   first obs. used      1998-05-23  
   last obs. used      2021-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:23  

Additional Information
 Earth MOID = .958461 au 
 Jupiter MOID = 1.88663 au 
 T_jup = 3.393 
[ 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 15.7   n/a MPO449702  
diameter diameter 1.677 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.362   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120842 (1998 KD55)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 KD55 = 2002 HS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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