Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
91227 (1999 BG9)
Classification: Mars-crossing Asteroid          SPK-ID: 2091227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2828101975484856 2.974e-08  
a 2.236518091535831 5.9757e-09 au
q 1.604007968247821 6.6172e-08 au
i 1.336175730928902 3.6848e-06 deg
node 172.4723120973489 0.00013527 deg
peri 358.5872689756139 0.00013531 deg
M 174.1204995794645 6.5431e-06 deg
tp 2458609.612974425918
(2019-May-06.11297443)
2.1468e-05 TDB
period 1221.678835751269
3.34
4.8963e-06
1.341e-08
d
yr
n .2946764644397058 1.181e-09 deg/d
Q 2.869028214823841 7.6657e-09 au
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      10568 days (28.93 yr)  
   first obs. used      1991-11-11  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:44:28  

Additional Information
 Earth MOID = .609521 au 
 Jupiter MOID = 2.09958 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457516.5 (2016-May-08.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2821569401576917 2.9708e-08  
q 1.605705160498186 6.6083e-08 au
tp 2457386.723883674270
(2015-Dec-30.22388367)
2.08e-05 TDB
node 172.5493947321667 0.00013549 deg
peri 358.4678738758258 0.00013554 deg
i 1.334501855837295 3.6819e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      10568 days (28.93 yr)  
   first obs. used      1991-11-11  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:44:28  

Additional Information
 Jupiter MOID = 2.09958 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.825400816251206E-16 -1.959124465601022E-15 -1.665879168647733E-13 -4.795348813747611E-14 5.949500354089644E-15 3.824717045023183E-16
q -1.959124465601022E-15 4.366987124971839E-15 3.763192334713376E-13 1.718122311060275E-13 -7.679115407676289E-14 -1.928615449108137E-15
tp -1.665879168647733E-13 3.763192334713376E-13 4.326441349374768E-10 -2.197150926352371E-11 1.442196335487654E-10 7.102121214845339E-13
node -4.795348813747611E-14 1.718122311060275E-13 -2.197150926352371E-11 1.835882971530268E-8 -1.834470697126617E-8 -1.03465878049766E-10
peri 5.949500354089644E-15 -7.679115407676289E-14 1.442196335487654E-10 -1.834470697126617E-8 1.837122766090787E-8 1.033842202542459E-10
i 3.824717045023183E-16 -1.928615449108137E-15 7.102121214845339E-13 -1.03465878049766E-10 1.033842202542459E-10 1.355636163098898E-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 16.30   n/a MPCxxxxx  

91227 (1999 BG9)          Discovered 1999-Jan-22 by Korlevic, K. at Visnjan
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1925-Jun-16 04:13 00:01 Mars 0.09493110209237 0.0949285854244942 0.0949336188588831 6.03716601985833 6.0366664657676 2424317.675433292 1.42055199962565 198.220000855033 13.0565493367619 50.8745229867376 794153.648287652 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44
1955-Sep-01 06:44 00:02 Mars 0.0793630010144269 0.0793625628956063 0.0793634391471015 4.86277522716729 4.86203334138928 2435351.780560237 2.01375782742203 67.0168657231569 12.3380520168757 -74.1116969934154 925354.308848977 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44
1985-Nov-03 02:04 00:01 Mars 0.0817314888847453 0.0817312348351085 0.0817317429347677 4.7472444092219 4.74650648979198 2446372.586144729 1.16106680265435 19.9977210195623 10.3869299511828 64.8896015717243 1003327.16070657 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44
2016-Jan-29 09:36 < 00:01 Mars 0.0399335808019209 0.0399332193777255 0.0399339422261527 4.92708357628841 4.92562831106694 2457416.899821474 0.236052762243811 18.2557195440671 13.584792595615 -13.784180807014 338234.271222458 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44
2046-Mar-31 22:53 < 00:01 Mars 0.0368617956305245 0.0368603649103912 0.0368632263601099 5.87411927578534 5.87279695802914 2468436.453445645 0.550233902828461 77.4324343408761 14.827870190004 23.3343561713011 155544.537891747 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44
2183-Mar-11 15:07 < 00:01 Mars 0.07412114608728 0.0741207015962967 0.0741215905986429 5.33759348763594 5.33686980522957 2518454.129832819 0.87105722144886 78.2473750803972 12.7891508154978 76.439598269283 819365.954778134 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 14:44:32 2021-Apr-13 14:44

Alternate Designations
 1999 BG9 = 2001 UY152 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-19 20:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin