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285944 (2001 RZ11)
Classification: Amor [NEO]          SPK-ID: 2285944
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 121 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5068676543359341 7.312e-09  
a 2.191645409473452 3.6642e-09 au
q 1.080771241637526 1.6065e-08 au
i 53.09018181373748 4.3722e-06 deg
node 324.0211457362385 1.3307e-06 deg
peri 340.5105403295954 7.5875e-06 deg
M 287.314335300392 2.831e-06 deg
tp 2459239.776544202984
(2021-Jan-25.27654420)
9.7368e-06 TDB
period 1185.096900043056
3.24
2.9721e-06
8.137e-09
d
yr
n .3037726282018969 7.6182e-10 deg/d
Q 3.302519577309379 5.5215e-09 au
  Orbit Determination Parameters
   # obs. used (total)      938  
   # delay obs. used      5  
   # Doppler obs. used      0  
   data-arc span      6768 days (18.53 yr)  
   first obs. used      2001-09-10  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .29995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-23 07:19:05  

Additional Information
 Earth MOID = .0890135 au 
 Jupiter MOID = 2.15043 au 
 T_jup = 3.046 
[ show covariance matrix ]

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 16.5   n/a MPO310796  
diameter diameter 1.044 km 0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 2.2455 h n/a LCDB (Rev. 2019-August); 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:
[Elenin, L.; Nevski, V.; Kusakin, A.; Molotov, I. (2015) Minor Planet Bull. 42, 34-35.]
[Vaduvescu, O.; Aznar Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
geometric albedo albedo 0.407   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

285944 (2001 RZ11)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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