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101531 (1998 XT97)
Classification: Main-belt Asteroid          SPK-ID: 2101531
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131722695310397 6.1388e-08  
a 2.335558020236575 9.8057e-09 au
q 1.837681816441323 1.4838e-07 au
i 3.581282199437549 4.3351e-06 deg
node 63.53572382122366 9.0273e-05 deg
peri 317.3013095807943 9.1324e-05 deg
M 37.69204616944999 1.4802e-05 deg
tp 2458864.000320594269
(2020-Jan-15.50032059)
5.307e-05 TDB
period 1303.720269394446
3.57
8.2104e-06
2.248e-08
d
yr
n .2761328549161956 1.739e-09 deg/d
Q 2.833434224031828 1.1896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      9035 days (24.74 yr)  
   first obs. used      1996-01-28  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:02  

Additional Information
 Earth MOID = .84256 au 
 Jupiter MOID = 2.62567 au 
 T_jup = 3.534 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2146430388775153 6.1687e-08  
q 1.833702521720274 1.4933e-07 au
tp 2457559.029152385331
(2016-Jun-19.52915239)
4.7474e-05 TDB
node 63.55013322209225 9.0293e-05 deg
peri 317.0363076625054 9.1314e-05 deg
i 3.582804239318182 4.3355e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      9035 days (24.74 yr)  
   first obs. used      1996-01-28  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:02  

Additional Information
 Jupiter MOID = 2.62567 au 
 T_jup = 3.534 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.805238723228839E-15 -9.204484630178828E-15 -1.547162906033968E-12 4.006967831613727E-14 -3.505940033939801E-13 -8.219786517779018E-15
q -9.204484630178828E-15 2.230055563918531E-14 3.810453952210338E-12 -9.787699602572378E-14 8.645147184918451E-13 2.019513865549764E-14
tp -1.547162906033968E-12 3.810453952210338E-12 2.253825054611961E-9 -3.533605769869134E-11 6.710725062577376E-10 6.561320140699973E-12
node 4.006967831613727E-14 -9.787699602572378E-14 -3.533605769869134E-11 8.152831472007739E-9 -8.146095819103642E-9 -3.930164774170772E-11
peri -3.505940033939801E-13 8.645147184918451E-13 6.710725062577376E-10 -8.146095819103642E-9 8.338271068456866E-9 4.086586397814248E-11
i -8.219786517779018E-15 2.019513865549764E-14 6.561320140699973E-12 -3.930164774170772E-11 4.086586397814248E-11 1.879697990259254E-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 16.5   n/a MPO449615  

101531 (1998 XT97)          Discovered 1998-Dec-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 XT97 = 2003 BZ78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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