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27809 (1993 HS1)
Classification: Main-belt Asteroid          SPK-ID: 2027809
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1139646290640473 3.4377e-08  
a 2.246624105748111 8.7438e-09 au
q 1.990588422890181 7.6319e-08 au
i 8.220657267966539 4.1913e-06 deg
node 29.56971769232399 2.9371e-05 deg
peri 200.5210214982586 3.7128e-05 deg
M 247.1238503309504 2.485e-05 deg
tp 2458986.150354141222
(2020-May-16.65035414)
8.5699e-05 TDB
period 1229.96866829617
3.37
7.1805e-06
1.966e-08
d
yr
n .292690382510877 1.7087e-09 deg/d
Q 2.502659788606042 9.7403e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1555  
   data-arc span      9515 days (26.05 yr)  
   first obs. used      1993-03-24  
   last obs. used      2019-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52898  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:05:38  

Additional Information
 Earth MOID = .983175 au 
 Jupiter MOID = 2.48267 au 
 T_jup = 3.608 
[ 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 14.2   n/a MPO365581  
diameter diameter 3.371 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.359   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27809 (1993 HS1)          Discovered 1993-Apr-20 by Endate, K., Watanabe, K. at Kitami
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 HS1 = 1997 QA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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