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JPL Small-Body Database Browser
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29075 (1950 DA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2029075
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 166 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5078265461162728 2.6793e-08  
a 1.698568963220988 1.1591e-09 au
q .8359905532881752 4.5919e-08 au
i 12.16749549995621 4.4834e-06 deg
node 356.662226848215 7.3398e-06 deg
peri 224.6832916054013 8.5399e-06 deg
M 230.8829305482103 2.5835e-06 deg
tp 2459290.504250239139
(2021-Mar-17.00425024)		 6.0639e-06 TDB
period 808.5803877780239
2.21		 8.2766e-07
2.266e-09		 d
yr
n .4452247487590921 4.5573e-10 deg/d
Q 2.5611473731538 1.7477e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -5.638680715907459E-15 1.288E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
   Orbit Determination Parameters
   # obs. used (total)      627  
   # delay obs. used      8  
   # Doppler obs. used      4  
   data-arc span      25478 days (69.75 yr)  
   first obs. used      1950-02-23  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-26 05:04:05  

Additional Information
 Earth MOID = .0401055 au 
 Jupiter MOID = 2.48364 au 
 T_jup = 4.026 
[ 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 17.1   n/a MPO244437  
diameter diameter 2.000 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.1216 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2001) http://www.asu.cas.cz/~ppravec/neo.htm]
[Busch, M.W.; Giorgini, J.D.; Ostro, S.J.; Benner, L.A.M.; et al. (2007) Icarus 190, 608-621.]
geometric albedo albedo 0.070   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

29075 (1950 DA)          Discovered 1950-Feb-22 by Wirtanen, C. A. at Mt. Hamilton
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1950 DA = 2000 YK66 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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