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2801 Huygens (1935 SU1)
Classification: Main-belt Asteroid          SPK-ID: 2002801
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711316369268025 3.6441e-08  
a 2.801359570735205 1.1745e-08 au
q 2.321958321774724 1.0356e-07 au
i 9.554255764918082 3.7858e-06 deg
node 34.12069861644957 2.3338e-05 deg
peri 314.2754382567026 2.5367e-05 deg
M 42.24480655213559 1.0218e-05 deg
tp 2458799.534023926946
(2019-Nov-12.03402393)
4.8451e-05 TDB
period 1712.583327775752
4.69
1.0771e-05
2.949e-08
d
yr
n .2102087496481449 1.322e-09 deg/d
Q 3.280760819695685 1.3756e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      30801 days (84.33 yr)  
   first obs. used      1935-09-28  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45046  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:31:29  

Additional Information
 Earth MOID = 1.32831 au 
 Jupiter MOID = 2.1965 au 
 T_jup = 3.283 
[ 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 11.9   n/a MPO502180  
diameter diameter 11.525 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.204   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2801 Huygens (1935 SU1)          Discovered 1935-Sep-28 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1935 SU1 = 1968 UG = 1976 JP5 = 1977 TT1 = 1980 FF11 = 1982 UZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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