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2077 Kiangsu (1974 YA)
Classification: Mars-crossing Asteroid          SPK-ID: 2002077
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2950160632483202 4.5028e-08  
a 2.327889602731159 6.3582e-09 au
q 1.641124776456716 1.0684e-07 au
i 28.08572791161465 5.0481e-06 deg
node 69.46061104592719 7.0104e-06 deg
peri 344.226225995724 8.8906e-06 deg
M 47.63277111775854 6.4094e-06 deg
tp 2459224.849392399990
(2021-Jan-10.34939240)
2.2673e-05 TDB
period 1297.304718703744
3.55
5.315e-06
1.455e-08
d
yr
n .2774984125238588 1.1369e-09 deg/d
Q 3.014654429005601 8.234e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2011  
   data-arc span      16965 days (46.45 yr)  
   first obs. used      1974-12-18  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:07:05  

Additional Information
 Earth MOID = .662654 au 
 Jupiter MOID = 2.36468 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457570.5 (2016-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2966031509665323 4.5285e-08  
q 1.636479914590528 1.076e-07 au
tp 2457926.357656786572
(2017-Jun-21.85765679)
1.9553e-05 TDB
node 69.49546628274749 7.0067e-06 deg
peri 343.9268549034658 8.8414e-06 deg
i 28.11078479802035 5.0532e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2011  
   data-arc span      16965 days (46.45 yr)  
   first obs. used      1974-12-18  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:07:05  

Additional Information
 Jupiter MOID = 2.36468 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.050772660389212E-15 -4.869491983861204E-15 -2.917873435945641E-13 1.123165112660818E-14 -6.818344095259105E-14 -1.306589894472191E-14
q -4.869491983861204E-15 1.157863814344007E-14 7.175759463827017E-13 -2.678306743477763E-14 1.657848634617359E-13 3.134872608009987E-14
tp -2.917873435945641E-13 7.175759463827017E-13 3.823276675223705E-10 -3.148329510873278E-12 1.108138991982113E-10 2.771223899699257E-12
node 1.123165112660818E-14 -2.678306743477763E-14 -3.148329510873278E-12 4.909424250885985E-11 -4.362230211589228E-11 -8.758893611202764E-12
peri -6.818344095259105E-14 1.657848634617359E-13 1.108138991982113E-10 -4.362230211589228E-11 7.817005742238795E-11 8.378509437500677E-12
i -1.306589894472191E-14 3.134872608009987E-14 2.771223899699257E-12 -8.758893611202764E-12 8.378509437500677E-12 2.553482040132559E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.66   n/a MPCxxxxx  
diameter diameter 3.791 km 0.609 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 104.2 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:
[Stephens, R.D.; French, L.M.; Davitt, C.; Coley, D.R. (2014) Minor Planet Bull. 41, 95-100.]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 226-230.]
geometric albedo albedo 0.358   0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

2077 Kiangsu (1974 YA)          Discovered 1974-Dec-18 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1974 YA = 2019 GM36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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