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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 188 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5077360606964316 2.6547e-08  
a 1.698665726802664 1.1458e-09 au
q .8361918822358386 4.55e-08 au
i 12.16734013772536 4.3464e-06 deg
node 356.6558403536075 7.2668e-06 deg
peri 224.6831644667536 8.4721e-06 deg
M 319.9225275287117 2.5847e-06 deg
tp 2459290.523965007406
(2021-Mar-17.02396501)
5.8853e-06 TDB
period 808.6494832198781
2.21
8.1821e-07
2.24e-09
d
yr
n .4451867063174926 4.5045e-10 deg/d
Q 2.56113957136949 1.7276e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -6.655655924318635E-15 1.269E-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)      762  
   # delay obs. used      8  
   # Doppler obs. used      4  
   data-arc span      25921 days (70.97 yr)  
   first obs. used      1950-02-23  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-18 06:25:48  

Additional Information
 Earth MOID = .0401265 au 
 Jupiter MOID = 2.48251 au 
 T_jup = 4.026 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457063.5 (2015-Feb-10.0) TDB
Reference: JPL 188 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5077648728379978 2.654e-08  
q .8360847809258334 4.5416e-08 au
tp 2456864.882437024210
(2014-Jul-26.38243702)
4.0823e-06 TDB
node 356.6832770604005 7.2645e-06 deg
peri 224.6416543637742 8.4702e-06 deg
i 12.17107535841327 4.3475e-06 deg

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -6.655655924318635E-15 1.269E-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)      762  
   # delay obs. used      8  
   # Doppler obs. used      4  
   data-arc span      25921 days (70.97 yr)  
   first obs. used      1950-02-23  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-18 06:25:48  

Additional Information
 Jupiter MOID = 2.48251 au 
 T_jup = 4.026 
Orbit Covariance (7×7)
  e q tp node peri i A2
e 7.043651239314961E-16 -1.205300427554069E-15 -3.432084036019955E-14 1.228038670770204E-13 -8.453325575206366E-14 2.1438190368172E-15 -1.895817883860068E-23
q -1.205300427554069E-15 2.062580573975939E-15 5.965781135316767E-14 -2.096799629027073E-13 1.450127123881687E-13 -4.456646012385772E-15 3.271630144055994E-23
tp -3.432084036019955E-14 5.965781135316767E-14 1.666536997494109E-11 -9.572751838597898E-13 1.398635880703164E-11 -1.159845821404057E-11 3.050283261394508E-21
node 1.228038670770204E-13 -2.096799629027073E-13 -9.572751838597898E-13 5.277332655521888E-11 -5.18118469127363E-11 -2.065990901014391E-11 -3.041756273609818E-21
peri -8.453325575206366E-14 1.450127123881687E-13 1.398635880703164E-11 -5.18118469127363E-11 7.174433818627504E-11 1.55620128156075E-11 4.081834008391281E-21
i 2.1438190368172E-15 -4.456646012385772E-15 -1.159845821404057E-11 -2.065990901014391E-11 1.55620128156075E-11 1.890057577384925E-11 -1.337929126824389E-21
A2 -1.895817883860068E-23 3.271630144055994E-23 3.050283261394508E-21 -3.041756273609818E-21 4.081834008391281E-21 -1.337929126824389E-21 1.611103144379046E-30

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 17.18   n/a MPCxxxxx  
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. 2020-October); 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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