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570 Kythera (A905 OF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000570
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 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183471158578885 3.3101e-08  
a 3.418000746449981 1.2199e-08 au
q 3.013490216107516 1.1441e-07 au
i 1.817014537260952 3.7783e-06 deg
node 223.3414738475889 0.00011313 deg
peri 161.3979361467016 0.00011429 deg
M 337.4091392818524 1.516e-05 deg
tp 2459145.339472320166
(2020-Oct-22.83947232)
9.706e-05 TDB
period 2308.110819052295
6.32
1.2357e-05
3.383e-08
d
yr
n .1559717137619134 8.3502e-10 deg/d
Q 3.822511276792447 1.3643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3756  
   data-arc span      42112 days (115.30 yr)  
   first obs. used      1905-07-31  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44792  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:33  

Additional Information
 Earth MOID = 2.0174 au 
 Jupiter MOID = 1.62993 au 
 T_jup = 3.131 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455530.5 (2010-Nov-30.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219102541309038 3.3466e-08  
q 3.004514274437054 1.1584e-07 au
tp 2454476.746847875196
(2008-Jan-11.24684788)
9.3185e-05 TDB
node 223.9219320818206 0.0001155 deg
peri 154.6517003514072 0.00011641 deg
i 1.785227011309416 3.7689e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3756  
   data-arc span      42112 days (115.30 yr)  
   first obs. used      1905-07-31  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44792  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:33  

Additional Information
 Jupiter MOID = 1.62993 au 
 T_jup = 3.131 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.119942581001246E-15 -3.86307152739425E-15 2.199084834571201E-14 1.185404171296289E-15 6.820828602674688E-15 -8.989476999220407E-18
q -3.86307152739425E-15 1.341906932994528E-14 -1.70004917788305E-13 1.726135146834277E-14 -5.379556455997228E-14 4.742576487258072E-16
tp 2.199084834571201E-14 -1.70004917788305E-13 8.683530521492064E-9 1.248287254181301E-12 1.382753613215931E-9 -2.584288243009827E-13
node 1.185404171296289E-15 1.726135146834277E-14 1.248287254181301E-12 1.334071462062258E-8 -1.333148829007295E-8 -2.362321389849977E-11
peri 6.820828602674688E-15 -5.379556455997228E-14 1.382753613215931E-9 -1.333148829007295E-8 1.355019814339857E-8 2.360836126904818E-11
i -8.989476999220407E-18 4.742576487258072E-16 -2.584288243009827E-13 -2.362321389849977E-11 2.360836126904818E-11 1.42045908854544E-11

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 8.7   n/a MPO492756 IRAS observations used: 6
diameter diameter 87.486 km 0.784 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.120 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. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Aznar, A.M.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.]
geometric albedo albedo 0.069   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.775   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
U-B UB 0.374   0.071 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
Tholen spectral type spec_T ST   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B T   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)

570 Kythera (A905 OF)          Discovered 1905-Jul-30 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A905 OF = 1952 BE = 1994 PG40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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