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2061 Anza (1960 UA)
Classification: Amor [NEO]          SPK-ID: 2002061
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 170 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5359270609905213 2.3158e-08  
a 2.264074738054178 1.0016e-09 au
q 1.050695817825918 5.2566e-08 au
i 3.799845524077751 2.9845e-06 deg
node 207.3764729700734 4.716e-05 deg
peri 157.030654244699 4.725e-05 deg
M 238.409607902784 1.8096e-06 deg
tp 2459620.772838816808
(2022-Feb-10.27283882)
6.0699e-06 TDB
period 1244.32711634882
3.41
8.257e-07
2.261e-09
d
yr
n .2893129911500554 1.9198e-10 deg/d
Q 3.477453658282438 1.5384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      22108 days (60.53 yr)  
   first obs. used      1960-10-22  
   last obs. used      2021-05-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:44:04  

Additional Information
 Earth MOID = .0542292 au 
 Jupiter MOID = 1.99475 au 
 T_jup = 3.410 
[ 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 16.34   n/a E2021B10  
diameter diameter 2.6 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed dark albedo (0.06)
rotation period rot_per 6.712 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:
[Warner, B.D. (2018) Minor Planet Bull. 45, 366-379.]
B-V BV 0.825   0.092 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.25, mean=7.04, max.=10.83) deg.
U-B UB 0.350   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.25 deg.
Tholen spectral type spec_T TCG:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

2061 Anza (1960 UA)          Discovered 1960-Oct-22 by Giclas, H. L. at Flagstaff (LO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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