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52757 (1998 MH4)
Classification: Main-belt Asteroid          SPK-ID: 2052757
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836157829611613 5.1605e-08  
a 2.30704124399471 9.1297e-09 au
q 1.88343205965493 1.1877e-07 au
i 25.80591570443254 6.2112e-06 deg
node 106.2706428311651 8.9347e-06 deg
peri 198.0900462590767 1.4994e-05 deg
M 194.5189613201556 1.0652e-05 deg
tp 2459984.838409744471
(2023-Feb-09.33840974)
3.8351e-05 TDB
period 1279.915990361784
3.50
7.5976e-06
2.08e-08
d
yr
n .2812684603606223 1.6696e-09 deg/d
Q 2.73065042833449 1.0806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-06-23  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:50  

Additional Information
 Earth MOID = .875452 au 
 Jupiter MOID = 2.50364 au 
 T_jup = 3.434 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457378.5 (2015-Dec-22.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837154021604606 5.1485e-08  
q 1.882802099701828 1.185e-07 au
tp 2457425.926462977585
(2016-Feb-07.42646298)
3.8643e-05 TDB
node 106.2923178351117 8.9394e-06 deg
peri 198.1799125447952 1.5015e-05 deg
i 25.80090132833316 6.2102e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-06-23  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:50  

Additional Information
 Jupiter MOID = 2.50364 au 
 T_jup = 3.434 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.650735457696159E-15 -6.088832320650313E-15 -4.307158730030168E-13 -2.957233742384545E-14 -9.103105562268463E-14 4.740854762854221E-15
q -6.088832320650313E-15 1.404159141298265E-14 9.312262345233654E-13 6.760669103909191E-14 1.930838407929163E-13 -1.043667215306872E-14
tp -4.307158730030168E-13 9.312262345233654E-13 1.493242972524015E-9 3.30136581003924E-12 4.738769744160139E-10 -2.057907695005825E-12
node -2.957233742384545E-14 6.760669103909191E-14 3.30136581003924E-12 7.991204826991789E-11 -7.037073721423512E-11 -3.86143288087273E-12
peri -9.103105562268463E-14 1.930838407929163E-13 4.738769744160139E-10 -7.037073721423512E-11 2.254534396388895E-10 2.915664110252101E-12
i 4.740854762854221E-15 -1.043667215306872E-14 -2.057907695005825E-12 -3.86143288087273E-12 2.915664110252101E-12 3.856619608427132E-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 14.98   n/a MPCxxxxx  
diameter diameter 2.891 km 0.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52757 (1998 MH4)          Discovered 1998-Jun-23 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 MH4 = 2000 AC49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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