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19459 (1998 HM11)
Classification: Main-belt Asteroid          SPK-ID: 2019459
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1703258980110212 4.0201e-08  
a 2.286285292136699 8.4058e-09 au
q 1.896871696644126 9.3954e-08 au
i 7.872189725694677 4.6815e-06 deg
node 107.0237616656467 3.0631e-05 deg
peri 89.7171027676881 3.3647e-05 deg
M 155.683378901027 1.5527e-05 deg
tp 2458454.448243225663
(2018-Dec-01.94824323)
5.2939e-05 TDB
period 1262.682206838104
3.46
6.9636e-06
1.907e-08
d
yr
n .285107367515283 1.5724e-09 deg/d
Q 2.675698887629272 9.8376e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1387  
   data-arc span      31838 days (87.17 yr)  
   first obs. used      1932-03-05  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51507  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:43:29  

Additional Information
 Earth MOID = .914968 au 
 Jupiter MOID = 2.31727 au 
 T_jup = 3.570 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO337422  
diameter diameter 4.058 km 0.988 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.223   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

19459 (1998 HM11)          Discovered 1998-Apr-18 by Spacewatch at Kitt Peak
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HM11 = 1932 EH = 1991 DF2 = 1991 GJ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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