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JPL Small-Body Database Browser
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49591 (1999 DO2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2049591
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054055308102593 3.5947e-08  
a 3.216466562626197 2.4497e-08 au
q 2.877433197259132 1.1693e-07 au
i 17.70339407039823 5.1912e-06 deg
node 46.23305496421508 1.3884e-05 deg
peri 84.83940800413409 2.9037e-05 deg
M 273.1275319291705 2.6419e-05 deg
tp 2459508.948122125650
(2021-Oct-21.44812213)
0.00015717 TDB
period 2107.011899512231
5.77
2.407e-05
6.59e-08
d
yr
n .1708580763513197 1.9519e-09 deg/d
Q 3.555499927993261 2.7079e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1803  
   data-arc span      10332 days (28.29 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:30:00  

Additional Information
 Earth MOID = 1.96123 au 
 Jupiter MOID = 1.71078 au 
 T_jup = 3.107 
[ 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 12.5   n/a MPO319675  
diameter diameter 17.646 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.09173 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.119   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49591 (1999 DO2)          Discovered 1999-Feb-19 by Kobayashi, T. at Oizumi
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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