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JPL Small-Body Database Browser
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111 Ate (A870 PA)
Classification: Main-belt Asteroid          SPK-ID: 2000111
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021148709090679 3.3072e-08  
a 2.595920754867286 6.0906e-09 au
q 2.330838642093843 8.568e-08 au
i 4.933029208132282 3.7193e-06 deg
node 305.7104692170977 3.8414e-05 deg
peri 166.9836655169628 4.1967e-05 deg
M 160.3595166239252 1.7524e-05 deg
tp 2458320.000499674462
7.3701e-05 TDB
period 1527.691185872802
n .2356497198707895 8.2933e-10 deg/d
Q 2.861002867640728 6.7126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2707  
   data-arc span      54678 days (149.70 yr)  
   first obs. used      1870-08-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:58:46  

Additional Information
 Earth MOID = 1.34765 au 
 Jupiter MOID = 2.22364 au 
 T_jup = 3.404 
[ 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 8.2   n/a MPO473761 IRAS observations used: 3
diameter diameter 126.344 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 22.072 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Pilcher, F. (2010) Minor Planet Bull. 37, 119-122.]
[Pilcher, F. (2011) Minor Planet Bull. 38, 183-185.]
geometric albedo albedo 0.062   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.690   0.012 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=11.71, mean=18.59, max.=24.92) deg.
U-B UB 0.389   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=11.71, mean=19.20, max.=24.92) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

111 Ate (A870 PA)          Discovered 1870-Aug-14 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A870 PA = 1935 AA = A911 KE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jun-01 22:44 UT
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