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46257 (2001 HF44)
Classification: Main-belt Asteroid          SPK-ID: 2046257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2543918955569905 4.0635e-08  
a 3.059738060880105 1.8901e-08 au
q 2.281365495664945 1.2052e-07 au
i 22.37063096984754 4.3607e-06 deg
node 208.407299995099 1.184e-05 deg
peri 139.5149989888794 1.4385e-05 deg
M 172.4048941731047 1.0387e-05 deg
tp 2458460.292987885037
(2018-Dec-07.79298788)
5.3039e-05 TDB
period 1954.901141164728
5.35
1.8114e-05
4.959e-08
d
yr
n .1841525345806041 1.7064e-09 deg/d
Q 3.838110626095265 2.371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1330  
   data-arc span      14464 days (39.60 yr)  
   first obs. used      1981-10-03  
   last obs. used      2021-05-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:22:37  

Additional Information
 Earth MOID = 1.3176 au 
 Jupiter MOID = 1.8334 au 
 T_jup = 3.072 
[ 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 13.45   n/a MPCxxxxx  
diameter diameter 10.658 km 2.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.075   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

46257 (2001 HF44)          Discovered 2001-Apr-16 by LONEOS at Anderson Mesa
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HF44 = 1981 TF1 = 1981 UL13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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