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3696 Herald (1980 OF)
Classification: Main-belt Asteroid          SPK-ID: 2003696
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461622624244434 2.1583e-08  
a 3.12264991155156 1.669e-08 au
q 2.666236335719696 6.9502e-08 au
i 10.11328069910712 1.2244e-06 deg
node 312.2426369890442 2.1435e-06 deg
peri 18.51938274533236 7.8191e-06 deg
M 124.7553837253291 1.0973e-05 deg
tp 2458502.042205822492
(2019-Jan-18.54220582)
5.9585e-05 TDB
period 2015.502645220528
5.52
1.6159e-05
4.424e-08
d
yr
n .178615493685254 1.432e-09 deg/d
Q 3.579063487383424 1.9129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2382  
   data-arc span      16138 days (44.18 yr)  
   first obs. used      1977-01-12  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:09:31  

Additional Information
 Earth MOID = 1.65524 au 
 Jupiter MOID = 1.77239 au 
 T_jup = 3.175 
[ 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 12.49   n/a E2021B10  
diameter diameter 16.300 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3696 Herald (1980 OF)          Discovered 1980-Jul-17 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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