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48798 Penghuanwu (1997 TS18)
Classification: Main-belt Asteroid          SPK-ID: 2048798
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343598936145918 4.0311e-08  
a 2.763950423006031 1.7541e-08 au
q 2.392586338214935 1.1873e-07 au
i 8.352950266715789 5.2528e-06 deg
node 333.8137909500343 3.1223e-05 deg
peri 304.3377601458238 3.872e-05 deg
M 298.3332960797015 2.4667e-05 deg
tp 2458888.002771360182
(2020-Feb-08.50277136)
0.00011585 TDB
period 1678.393543190437
4.60
1.5978e-05
4.375e-08
d
yr
n .2144908156138879 2.0419e-09 deg/d
Q 3.135314507797127 1.9898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1997-10-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54062  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:20  

Additional Information
 Earth MOID = 1.3877 au 
 Jupiter MOID = 2.07104 au 
 T_jup = 3.312 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456802.5 (2014-May-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331461202161519 4.0312e-08  
q 2.396166040704952 1.1857e-07 au
tp 2457209.609488367091
(2015-Jul-06.10948837)
0.00011272 TDB
node 333.8382346635149 3.1219e-05 deg
peri 304.399062346686 3.8836e-05 deg
i 8.352596651342786 5.2528e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1997-10-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54062  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:20  

Additional Information
 Jupiter MOID = 2.07104 au 
 T_jup = 3.312 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.625088763506634E-15 -4.747352596309151E-15 -7.739311340032287E-13 6.777317437494089E-15 -1.127344913491178E-13 1.053219412257201E-15
q -4.747352596309151E-15 1.40597176046471E-14 2.465149294673003E-12 -1.627928252051548E-14 3.571860862141231E-13 -1.721871580744588E-15
tp -7.739311340032287E-13 2.465149294673003E-12 1.2705376453107E-8 -4.042443620171548E-11 2.626200391027636E-9 -3.495479212660316E-13
node 6.777317437494089E-15 -1.627928252051548E-14 -4.042443620171548E-11 9.746443863396505E-10 -9.715956725392997E-10 4.891773444681554E-11
peri -1.127344913491178E-13 3.571860862141231E-13 2.626200391027636E-9 -9.715956725392997E-10 1.508272909390566E-9 -4.837766519334978E-11
i 1.053219412257201E-15 -1.721871580744588E-15 -3.495479212660316E-13 4.891773444681554E-11 -4.837766519334978E-11 2.759161656987679E-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 13.9   n/a MPO296496  
diameter diameter 4.201 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48798 Penghuanwu           Discovered 1997 Oct. 6 by the Beijing Schmidt CCD Asteroid Program at Xinglong.
Chinese theoretical physicist Peng Huanwu (b. 1915) made many contributions to theoretical physics and played an important role in the development of scientific research in China, especially in promoting interdisciplinary scientific studies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1997 TS18 = 1998 XE30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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