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JPL Small-Body Database Browser
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10694 Lacerda (1981 EH21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2010694
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03566026911176206 3.8599e-08  
a 3.20895554639226 2.261e-08 au
q 3.094523328040231 1.2253e-07 au
i 22.08220224912414 6.5636e-06 deg
node 177.880011655832 1.1932e-05 deg
peri 128.4220526134596 9.4708e-05 deg
M 170.5984073915612 9.3705e-05 deg
tp 2458005.515191574190
(2017-Sep-09.01519157)
0.00054618 TDB
period 2099.635843675584
5.75
2.2191e-05
6.076e-08
d
yr
n .1714583036312576 1.8121e-09 deg/d
Q 3.32338776474429 2.3416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1304  
   data-arc span      14208 days (38.90 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:11:17  

Additional Information
 Earth MOID = 2.11418 au 
 Jupiter MOID = 1.81212 au 
 T_jup = 3.076 
[ 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 13.2   n/a MPO458933  
diameter diameter 11.708 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.188 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.089   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10694 Lacerda           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Pedro Lacerda (b. 1975) is a Lecturer at Queen's University Belfast whose work includes analyzing rotational lightcurves to infer physical properties of trans-Neptunian objects and other small solar system bodies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1903-Aug-02 20:57 00:03 Jupiter 1.99371523016888 1.99371327974686 1.99371718061742 6.84412763577089 6.78176898145146 2416329.372594234 2.93476141534892 394.379813444177 29.3729946142534 -76.3608946137224 3735140.32164972 T 26 CATAB v2.0f-lin.ifort 2020-Jan-28 22:11:42 2020-Jan-28 22:11
2059-Jan-25 11:42 00:01 Jupiter 1.95575615651772 1.95575538246743 1.95575693057013 6.41169509300348 6.34378828392924 2473118.987287183 1.30368148482392 183.420166077919 31.2616835653014 82.7210690371706 3031428.21992881 T 26 CATAB v2.0f-lin.ifort 2020-Jan-28 22:11:42 2020-Jan-28 22:11
2070-Apr-13 21:44 00:02 Jupiter 1.87706306264383 1.87706248352953 1.87706364175898 6.84165978632463 6.77538271734757 2477215.405447532 1.54434394181502 240.529555270134 27.4013043698133 -88.2136905418824 3549678.21406143 T 26 CATAB v2.0f-lin.ifort 2020-Jan-28 22:11:42 2020-Jan-28 22:11
2081-Jun-30 08:36 00:02 Jupiter 1.9913892302962 1.9913879935458 1.99139046705667 6.90778866999544 6.84593742792127 2481310.858560045 1.90922201220413 258.956173329319 27.5310299043999 -77.6427457541308 3916084.23423603 T 26 CATAB v2.0f-lin.ifort 2020-Jan-28 22:11:42 2020-Jan-28 22:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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