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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712274031222104 8.6845e-09  
a 2.802057606878885 1.1004e-08 au
q 2.322268559454178 2.2654e-08 au
i 9.553260150277522 5.7162e-07 deg
node 34.11636758753288 1.7905e-06 deg
peri 314.3484226663382 7.3054e-06 deg
M 84.2057123281469 6.0224e-06 deg
tp 2458799.768880578722
(2019-Nov-12.26888058)
2.7807e-05 TDB
period 1713.223473835968
4.69
1.0092e-05
2.763e-08
d
yr
n .2101302051354382 1.2378e-09 deg/d
Q 3.281846654303592 1.2888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3013  
   data-arc span      31214 days (85.46 yr)  
   first obs. used      1935-09-28  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42598  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:17:30  

Additional Information
 Earth MOID = 1.32691 au 
 Jupiter MOID = 2.19625 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 11.93   n/a E2021B10  
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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