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3778 Regge (1984 HK1)
Classification: Main-belt Asteroid          SPK-ID: 2003778
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04014399828525424 2.6157e-08  
a 2.870292557175845 1.1094e-08 au
q 2.755067537682399 7.9094e-08 au
i 1.36873435896471 8.1954e-07 deg
node 339.1625955331 1.9164e-05 deg
peri 101.867591080785 3.7396e-05 deg
M 312.7129334468494 3.3378e-05 deg
tp 2459433.806880489071
(2021-Aug-07.30688049)
0.0001646 TDB
period 1776.182857138331
4.86
1.0298e-05
2.819e-08
d
yr
n .2026818345606647 1.1751e-09 deg/d
Q 2.98551757666929 1.1539e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2706  
   data-arc span      24935 days (68.27 yr)  
   first obs. used      1952-12-11  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43349  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:11:45  

Additional Information
 Earth MOID = 1.77076 au 
 Jupiter MOID = 2.10331 au 
 T_jup = 3.297 
[ 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 12.63   n/a E2021B10  
diameter diameter 8.739 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.192   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3778 Regge (1984 HK1)          Discovered 1984-Apr-26 by Ferreri, W. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 HK1 = 1976 SX1 = 1981 UC11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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