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702 Alauda (A910 OA)
Classification: Main-belt Asteroid          SPK-ID: 2000702
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 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01691479803353868 9.2499e-09  
a 3.194293741405782 9.028e-09 au
q 3.140262907910107 3.1743e-08 au
i 20.60167045208135 4.8631e-07 deg
node 289.7439841069086 7.9421e-07 deg
peri 352.6632153766045 7.0628e-05 deg
M 155.7350241876128 7.3334e-05 deg
tp 2458298.421158173362
(2018-Jun-28.92115817)
0.00042294 TDB
period 2085.262353485545
5.71
8.8404e-06
2.42e-08
d
yr
n .1726401473647932 7.319e-10 deg/d
Q 3.248324574901458 9.1807e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3473  
   data-arc span      40418 days (110.66 yr)  
   first obs. used      1910-07-17  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:18:41  

Additional Information
 Earth MOID = 2.1223 au 
 Jupiter MOID = 1.94933 au 
 T_jup = 3.096 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457225.5 (2015-Jul-22.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01980293902435021 9.1525e-09  
q 3.128982496631805 3.1703e-08 au
tp 2456206.158343836907
(2012-Oct-05.65834384)
0.00036162 TDB
node 289.9335946612416 7.9714e-07 deg
peri 351.0683173742532 6.0854e-05 deg
i 20.61058332485723 4.8662e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3473  
   data-arc span      40418 days (110.66 yr)  
   first obs. used      1910-07-17  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:18:41  

Additional Information
 Jupiter MOID = 1.94933 au 
 T_jup = 3.096 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.376824956783263E-17 -2.785821044700809E-16 4.460717727426648E-13 -1.90574649352025E-15 7.533873693097591E-14 2.494761842524078E-15
q -2.785821044700809E-16 1.005098411626451E-15 8.00824247622912E-14 5.917806940025862E-15 1.765057497215577E-14 -8.009310092898089E-15
tp 4.460717727426648E-13 8.00824247622912E-14 1.307674878357309E-7 3.303793515499002E-11 2.200359639039598E-8 -8.39379069324435E-12
node -1.90574649352025E-15 5.917806940025862E-15 3.303793515499002E-11 6.354290068084472E-13 5.202037461354195E-12 -6.950672147665653E-14
peri 7.533873693097591E-14 1.765057497215577E-14 2.200359639039598E-8 5.202037461354195E-12 3.703194001733778E-9 -1.371947424735452E-12
i 2.494761842524078E-15 -8.009310092898089E-15 -8.39379069324435E-12 -6.950672147665653E-14 -1.371947424735452E-12 2.368000384393377E-13

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 7.35   n/a E2021B10 IRAS observations used: 26
diameter diameter 190.980 km 1.973 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.7072 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:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.061   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.665   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=2.23, mean=6.88, max.=14.75) deg.
U-B UB 0.316   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=2.23, mean=6.88, max.=14.75) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

702 Alauda (A910 OA)          Discovered 1910-Jul-16 by Helffrich, J. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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