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11057 (1991 NL)
Classification: Main-belt Asteroid          SPK-ID: 2011057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974674259483461 3.3261e-08  
a 2.554694172699876 1.0576e-08 au
q 2.050225290331592 8.4651e-08 au
i 15.15183233031587 3.5953e-06 deg
node 259.8145639015267 1.8038e-05 deg
peri 53.89893097592616 2.3222e-05 deg
M 57.97980424325573 1.4045e-05 deg
tp 2458960.295551087596
(2020-Apr-20.79555109)
5.8479e-05 TDB
period 1491.443490317136
4.08
9.2612e-06
2.536e-08
d
yr
n .2413768958309314 1.4988e-09 deg/d
Q 3.05916305506816 1.2664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2145  
   data-arc span      13700 days (37.51 yr)  
   first obs. used      1983-08-11  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42125  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:29:55  

Additional Information
 Earth MOID = 1.07058 au 
 Jupiter MOID = 2.26482 au 
 T_jup = 3.363 
[ 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 13.68   n/a E2021B10  
diameter diameter 5.402 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.05707 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 0.264   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11057 (1991 NL)          Discovered 1991-Jul-08 by Helin, E. F. at Palomar
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 NL = 1987 QB11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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