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1121 Natascha (1928 RZ)
Classification: Main-belt Asteroid          SPK-ID: 2001121
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1583888265534571 2.4884e-08  
a 2.546380994043183 7.0877e-09 au
q 2.143062696438658 6.1403e-08 au
i 6.164447144391926 1.083e-06 deg
node 357.8936017286041 8.2026e-06 deg
peri 50.10017586672918 9.0999e-06 deg
M 216.6905285735112 7.0018e-06 deg
tp 2459791.320963332630
(2022-Jul-30.82096333)
3.0495e-05 TDB
period 1484.169501726547
4.06
6.1966e-06
1.697e-08
d
yr
n .2425598960099969 1.0127e-09 deg/d
Q 2.949699291647709 8.2103e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3182  
   data-arc span      33061 days (90.52 yr)  
   first obs. used      1930-02-24  
   last obs. used      2020-08-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4147  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:01:10  

Additional Information
 Earth MOID = 1.15763 au 
 Jupiter MOID = 2.46437 au 
 T_jup = 3.417 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.57   n/a E2021B10  
diameter diameter 12.859 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.197 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Moravec, P.; Letfullina, A.; Ditteon, R. (2013) Minor Planet Bull. 40, 17-20.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.294   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1121 Natascha (1928 RZ)          Discovered 1928-Sep-11 by Shajn, P. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1928 RZ = A918 EK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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