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3321 Dasha (1975 TZ2)
Classification: Main-belt Asteroid          SPK-ID: 2003321
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980277583575654 3.7856e-08  
a 2.546354246464459 8.8473e-09 au
q 2.042105423052834 9.5981e-08 au
i 7.321813513280733 4.4724e-06 deg
node 162.5149368520326 3.614e-05 deg
peri 202.3676678852678 3.8524e-05 deg
M 5.071766187697311 1.5993e-05 deg
tp 2458979.590994185714
(2020-May-10.09099419)
6.5899e-05 TDB
period 1484.146116869901
4.06
7.735e-06
2.118e-08
d
yr
n .2425637178900205 1.2642e-09 deg/d
Q 3.050603069876083 1.0599e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2007  
   data-arc span      24228 days (66.33 yr)  
   first obs. used      1954-07-02  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:16  

Additional Information
 Earth MOID = 1.04182 au 
 Jupiter MOID = 2.40849 au 
 T_jup = 3.404 
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Orbital Elements at Epoch 2456650.5 (2013-Dec-24.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2003163865844276 3.7952e-08  
q 2.03531857641837 9.6437e-08 au
tp 2456012.707145337407
(2012-Mar-26.20714534)
6.2133e-05 TDB
node 162.6448262079132 3.6124e-05 deg
peri 202.4243717479935 3.8437e-05 deg
i 7.325682813201273 4.4751e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2007  
   data-arc span      24228 days (66.33 yr)  
   first obs. used      1954-07-02  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:16  

Additional Information
 Jupiter MOID = 2.40849 au 
 T_jup = 3.404 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.440390878336255E-15 -3.650338377545031E-15 -2.688452321384346E-14 -5.892204140914541E-15 1.432045974553807E-14 1.168004525652348E-15
q -3.650338377545031E-15 9.300146812280462E-15 9.113721901859833E-14 1.679960655025677E-14 -2.970514440899761E-14 -2.569194521248589E-15
tp -2.688452321384346E-14 9.113721901859833E-14 3.860568714209075E-9 7.889462278083804E-12 8.417834652985061E-10 2.139157023095928E-12
node -5.892204140914541E-15 1.679960655025677E-14 7.889462278083804E-12 1.30494485079149E-9 -1.291924775013385E-9 -4.671973288692266E-12
peri 1.432045974553807E-14 -2.970514440899761E-14 8.417834652985061E-10 -1.291924775013385E-9 1.477430002380357E-9 5.152846107110634E-12
i 1.168004525652348E-15 -2.569194521248589E-15 2.139157023095928E-12 -4.671973288692266E-12 5.152846107110634E-12 2.002607287450744E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO302082  
diameter diameter 7.958 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3321 Dasha (1975 TZ2)          Discovered 1975-Oct-03 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1975 TZ2 = 1951 YC2 = 1983 RZ = 1983 SH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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