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85610 (1998 HC11)
Classification: Outer Main-belt Asteroid          SPK-ID: 2085610
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09577664166820053 5.8691e-08  
a 3.22995300897401 3.2733e-08 au
q 2.92059895702838 1.9965e-07 au
i 6.390688674612303 5.9008e-06 deg
node 76.22221865591 5.6215e-05 deg
peri 158.0588157704291 6.6745e-05 deg
M 306.6749621935185 3.9542e-05 deg
tp 2459514.566347753274
(2021-Oct-27.06634775)
0.00023555 TDB
period 2120.277637711038
5.81
3.2231e-05
8.824e-08
d
yr
n .1697890849750416 2.581e-09 deg/d
Q 3.539307060919639 3.5868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      8375 days (22.93 yr)  
   first obs. used      1998-04-17  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61602  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:04  

Additional Information
 Earth MOID = 1.90887 au 
 Jupiter MOID = 1.46327 au 
 T_jup = 3.170 
[ 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 15.20   n/a MPCxxxxx  
diameter diameter 5.699 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85610 (1998 HC11)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HC11 = 2001 YM54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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