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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5068717337558507 7.091e-09  
a 2.191369866806758 3.6581e-09 au
q 1.080626423118089 1.5602e-08 au
i 53.0917525641723 4.3389e-06 deg
node 324.0216990914917 1.3253e-06 deg
peri 340.5112232730772 7.357e-06 deg
M 47.61990771135412 3.0012e-06 deg
tp 2459239.767881574016
(2021-Jan-25.26788157)
9.5874e-06 TDB
period 1184.87341418978
3.24
2.9669e-06
8.123e-09
d
yr
n .3038299245208139 7.6078e-10 deg/d
Q 3.302113310495427 5.5123e-09 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   # 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .30145  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:36:09  

Additional Information
 Earth MOID = .0881565 au 
 Jupiter MOID = 2.15081 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. 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:
[Elenin, L.; Nevski, V.; Kusakin, A.; Molotov, I. (2015) Minor Planet Bull. 42, 34-35.]
[Vaduvescu, O.; Aznar, A.M.; 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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