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JPL Small-Body Database Browser
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12699 (1990 DD2)
Classification: Main-belt Asteroid          SPK-ID: 2012699
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578442914929824 4.0522e-08  
a 2.335804489789849 7.7473e-09 au
q 1.967111085032843 9.4485e-08 au
i 3.141911891119268 4.9962e-06 deg
node 180.6225321555637 7.3483e-05 deg
peri 49.0515195968418 7.4938e-05 deg
M 357.7413800800653 1.4457e-05 deg
tp 2458608.680763044510
(2019-May-05.18076304)
5.2365e-05 TDB
period 1303.926645660939
3.57
6.4872e-06
1.776e-08
d
yr
n .2760891505653079 1.3736e-09 deg/d
Q 2.704497894546855 8.9702e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1154  
   data-arc span      15746 days (43.11 yr)  
   first obs. used      1976-04-01  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52157  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:04:40  

Additional Information
 Earth MOID = .958746 au 
 Jupiter MOID = 2.28287 au 
 T_jup = 3.549 
[ 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 15.0   n/a MPO337366  
diameter diameter 5.034 km 1.420 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 21.10 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.054   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

12699 (1990 DD2)          Discovered 1990-Feb-24 by Debehogne, H. at La Silla
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 DD2 = 1976 GC2 = 1983 HP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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