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2907 Nekrasov (1975 TT2)
Classification: Main-belt Asteroid          SPK-ID: 2002907
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09675326794891581 1.9503e-08  
a 3.014053400845746 1.2495e-08 au
q 2.722433884541376 6.2421e-08 au
i 10.21491982385363 9.2867e-07 deg
node 172.4217780962524 6.6992e-06 deg
peri 199.3526841001756 1.0112e-05 deg
M 267.7970210486001 1.0812e-05 deg
tp 2459886.016452273243
(2022-Nov-02.51645227)
5.8531e-05 TDB
period 1911.282312377956
5.23
1.1885e-05
3.254e-08
d
yr
n .1883552197749895 1.1712e-09 deg/d
Q 3.305672917150115 1.3703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3401  
   data-arc span      25260 days (69.16 yr)  
   first obs. used      1952-04-29  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40568  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:04:22  

Additional Information
 Earth MOID = 1.72294 au 
 Jupiter MOID = 2.15903 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09578642726990697 1.9416e-08  
q 2.725555640881759 6.2169e-08 au
tp 2457979.391511968771
(2017-Aug-13.89151197)
5.5879e-05 TDB
node 172.4439355429595 6.7006e-06 deg
peri 200.3004097034623 1.0268e-05 deg
i 10.21271228007803 9.2854e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3401  
   data-arc span      25260 days (69.16 yr)  
   first obs. used      1952-04-29  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40568  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:04:22  

Additional Information
 Jupiter MOID = 2.15903 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.769921603006785E-16 -1.187665046757458E-15 -5.495673477126416E-13 2.191514635218135E-14 -9.126514107161141E-14 3.386164377193479E-15
q -1.187665046757458E-15 3.865021884855625E-15 1.78084505463236E-12 -6.18373366547617E-14 2.801574875173288E-13 -9.155543427502646E-15
tp -5.495673477126416E-13 1.78084505463236E-12 3.122421179466485E-9 4.881297594190454E-11 4.394910903794079E-10 1.355799186529206E-11
node 2.191514635218135E-14 -6.18373366547617E-14 4.881297594190454E-11 4.48985851248495E-11 -3.592975427741903E-11 3.193608714576371E-12
peri -9.126514107161141E-14 2.801574875173288E-13 4.394910903794079E-10 -3.592975427741903E-11 1.054418539118953E-10 -8.999935745809452E-13
i 3.386164377193479E-15 -9.155543427502646E-15 1.355799186529206E-11 3.193608714576371E-12 -8.999935745809452E-13 8.621950095962796E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.81   n/a E2021B10  
diameter diameter 16.749 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.1493 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.159   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2907 Nekrasov (1975 TT2)          Discovered 1975-Oct-03 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1975 TT2 = 1952 HL1 = 1954 UW1 = 1968 KT = 1970 XD = 1980 RW3 = 1980 TH7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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