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3610 Decampos (1981 EA1)
Classification: Main-belt Asteroid          SPK-ID: 2003610
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04684303179809203 1.3116e-08  
a 2.148067916962885 4.5014e-09 au
q 2.047445903224132 2.6818e-08 au
i 2.078030308152683 5.2826e-07 deg
node 115.9591216346832 2.0445e-05 deg
peri 39.34388087436725 3.4654e-05 deg
M 231.7340963765265 2.2544e-05 deg
tp 2459610.212452827695
(2022-Jan-30.71245283)
7.2451e-05 TDB
period 1149.927446431502
3.15
3.6146e-06
9.896e-09
d
yr
n .3130632294386619 9.8407e-10 deg/d
Q 2.248689930701639 4.7123e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3275  
   data-arc span      25846 days (70.76 yr)  
   first obs. used      1950-06-15  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43298  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:06:20  

Additional Information
 Earth MOID = 1.057 au 
 Jupiter MOID = 2.72073 au 
 T_jup = 3.705 
[ 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 13.79   n/a E2021B10  
diameter diameter 4.578 km 1.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 7.8349 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.321   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

3610 Decampos (1981 EA1)          Discovered 1981-Mar-05 by Debehogne, H. at La Silla
and G. de Sanctis.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EA1 = 1967 UU = 1975 HE = 1976 SS9 = 1978 GB5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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