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30946 (1994 HB)
Classification: Main-belt Asteroid          SPK-ID: 2030946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2119900218850588 4.0902e-08  
a 2.160151601607483 4.9837e-09 au
q 1.702221016307668 8.7546e-08 au
i 1.982743574753902 5.4961e-06 deg
node 189.004157414552 8.0129e-05 deg
peri 128.449141306622 8.1098e-05 deg
M 54.83702711268433 1.1303e-05 deg
tp 2459023.857104268839
(2020-Jun-23.35710427)
3.6391e-05 TDB
period 1159.644236959528
3.17
4.0131e-06
1.099e-08
d
yr
n .3104400371478447 1.0743e-09 deg/d
Q 2.618082186907298 6.0402e-09 au
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      9767 days (26.74 yr)  
   first obs. used      1994-04-16  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:42:39  

Additional Information
 Earth MOID = .68784 au 
 Jupiter MOID = 2.68182 au 
 T_jup = 3.667 
[ 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 17.08   n/a E2021B10  
diameter diameter 2.549 km 0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30946 (1994 HB)          Discovered 1994-Apr-19 by Spacewatch at Kitt Peak
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 HB = 1997 EZ31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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