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154693 (2004 HR44)
Classification: Main-belt Asteroid          SPK-ID: 2154693
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07180315754776206 3.7798e-08  
a 2.207329119675765 9.7992e-09 au
q 2.048835919135924 8.347e-08 au
i 5.390854089326142 5.6625e-06 deg
node 5.558473940328354 4.5666e-05 deg
peri 272.7881017576921 6.261e-05 deg
M 281.2168325951276 4.454e-05 deg
tp 2459262.638012491001
(2021-Feb-17.13801249)
0.0001486 TDB
period 1197.840701323768
3.28
7.9765e-06
2.184e-08
d
yr
n .3005407977890162 2.0013e-09 deg/d
Q 2.365822320215607 1.0503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      7308 days (20.01 yr)  
   first obs. used      2000-01-03  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54894  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 20:05:13  

Additional Information
 Earth MOID = 1.04125 au 
 Jupiter MOID = 2.70727 au 
 T_jup = 3.651 
[ 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 16.3   n/a MPO359796  
diameter diameter 1.726 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154693 (2004 HR44)          Discovered 2004-Apr-21 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 HR44 = 2000 AF39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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