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JPL Small-Body Database Browser
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136915 (1998 HM109)
Classification: Main-belt Asteroid          SPK-ID: 2136915
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491459437194144 5.3605e-08  
a 3.07194845694427 2.5308e-08 au
q 2.613779805275918 1.6586e-07 au
i 23.0047999395625 7.3128e-06 deg
node 56.05166619095568 1.4701e-05 deg
peri 95.69475529280956 2.9331e-05 deg
M 8.817085619178377 2.3351e-05 deg
tp 2458552.333856966410
(2019-Mar-09.83385697)
0.0001275 TDB
period 1966.614847697044
5.38
2.4302e-05
6.654e-08
d
yr
n .1830556707235121 2.2621e-09 deg/d
Q 3.530117108612623 2.9082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      695  
   data-arc span      7688 days (21.05 yr)  
   first obs. used      1998-04-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57631  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:30  

Additional Information
 Earth MOID = 1.73955 au 
 Jupiter MOID = 1.81332 au 
 T_jup = 3.093 
[ 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 14.3   n/a MPO299760  
diameter diameter 8.742 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136915 (1998 HM109)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 HM109 = 2001 UC76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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